(B) Hla expression measured by quantitative Western

(B) Hla expression measured by quantitative Western MM-102 clinical trial blot. There was a small but statistically significant increase in Hla production by JKD6159_AraCr (p = 0.0473). TPS3105r expressed more Hla than TPS3105 (p = 0.0019) Data shown are mean intensity of bands in arbitrary units and SEM. Note, *p < 0.05, compared to JKD6159. Note also, ###p < 0.001 and ##p < 0.01, compared to TPS3105. The AraC/XylS regulator (AryK) enhanced Hla expression and virulence in ST93 CA-MRSA The

SNP at position 92551 in SAA6159_00084 introduced a premature stop codon and created a pseudogene within SAA6159_00084 in JDK6159, however the gene was intact in TPS3106. The intact version of this gene, which was also intact in 19 other publically available

S. aureus genome sequences we examined, encodes a previously uncharacterized AraC/XylS family regulatory protein. While the virulence attenuation in TPS3106 was likely a direct result of the agr deficiency, we also wanted to determine if the novel regulator mutation in SAA6159_00084 impacted the virulence in ST93 S. aureus. To test the hypothesis that SAA6159_00084 encoded a regulator of virulence, we repaired the premature stop codon in SAA6159_00084 in JKD6159 using allelic exchange to generate strain JKD6159_AraCr. To confirm we had not introduced additional DNA changes during allelic exchange we sequenced the whole genome of JKD6159_AraCr and found no additional mutations (35× coverage). JKD6159_AraCr encoding an intact copy of SAA6159_00084 demonstrated a modest, but significant increase in virulence as indicated Adavosertib by lesion size (p < 0.0001) and weight loss in the mouse skin infection assay (p = 0.0311, Figure  5), suggesting that this protein is a positive ALOX15 regulator of virulence in CA-MRSA strains. JKD6159_AraCr expressed more PSMα3 (p = 0.0325) and Hla (p = 0.0473) than its parental strain JKD6159 that was consistent with an increase mouse skin lesion size (Figure  6). We propose the name aryK for SAA6159_00084 (AraC family-like gene). RNAseq demonstrates global regulatory IWR-1 mouse impact of AryK To

investigate the regulatory impact of AryK, RNAseq was performed using RNA extracted from stationary phase cultures (Figure  7). This growth phase was selected as we reasoned that AryK might be interacting with agr and thus any impacts on Hla expression would be greatest at this time. A small number of virulence-associated loci were down regulated in the aryK mutant (JKD6159), including beta-type phenol soluble modulins (SAA6159_01024 and SAA6159_01025), and the virulence regulator saeS. However, the most dramatic and significant transcriptional changes were found in genes involved in central metabolic functions. Using the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis ( http://​www.​genome.

05; Student’s t test) Cell cycle analysis was performed to deter

05; Student’s t test). Cell cycle analysis was performed to determine whether the effect of SHP099 clinical trial MiR-20a on cell proliferation of HepG2 and SMMC-7721 HCC cell lines was due to cell cycle arrest. The result showed that when comparing to the control oligonucleotide,

the percentages of cells at G1 phase were increased in both HCC cell lines (for HepG2, from 58.3% to 80.0%, P = 0.003; for SMMC-7721, from 49.3% to 69.1%, P = 0.009), while the percentages of cells at S phase were decreased in HepG2 (from 29.3% to12.7%, P = 0.003) and SMMC-7721 (from 37.3% to 24.3%, P = 0.011) (Figure 2D Abemaciclib chemical structure and E). All of these data demonstrated that overexpression of miR-20a could induce the HCC cell cycle G1 arrest and block cell cycle progression. Disappointingly, the percentage of cells at G2/M phase was of no statistic significance in HepG2 or SMMC-7721 cells transfected with miR-20a when compared with the control group,

although the absolute value was decreased to a certain extent (Figure 2D and E). MiR-20a restoration induces HCC cells to apoptosis To better understand the effect of proliferation inhibition of miR-20a on HCC cells, we further investigated whether miR-20a could induce apoptosis of HCC cells. Flow cytometry check details analysis showed that much more apoptotic cells were observed in the miR-20a restoration group compared with the control group (Figure 3). Significant differences were observed both in SMMC-7721 (P < 0.001) and HepG2 (P = 0.005) HCC cells. The apoptosis rates increased from 10.1% to 24.1% for SMMC-7721 cells and from 12.9% to 23.1% for HepG2 cells after transfeted by miR-20 precursor. Figure 3 MiR-20a restoration in HCC cell lines induces apoptosis a SMMC-7721 and HepG2 cells transfected with miR-20a precursor Mirabegron were stained with FITC and PI. 20,000 cells were analyzed by flow cytometry. The LR quadrant represents the percentage of apoptotic cells (annexin V + and

PI-) in the total cell population. Each type of cell was assayed in triplicate. All data were processed by Student’s t test and presented as mean ± SD. Asterisks indicate statistical significance of differences in the apoptosis rate of cells between miR-20a precursor transfected and control oligonucleotide transfected cells (P < 0.05; Student’s t test). MiR-20a directly regulates Mcl-1 expresion The preceding findings indicated that miR-20a acted as a proliferation suppressor in HCC. Therefore, we then aimed to investigate the potential gene targets of miR-20a that contributed to its antiproferation functions. Potential target genes of miR-20a were first predicted using online databases (TargetScan, PicTar, and miRanda).

They have complementary information to DXA and are potentially im

They have complementary information to DXA and are potentially important for the assessment of femoral bone strength,

even though they are not an integral whole-bone tool such as the finite element method [38–42]. DXA parameters had the highest correlations with FL in the neck ROI and the total ROI, similar to previous MK-2206 solubility dmso studies [32, 33]. In contrast, trabecular structure parameters achieved the lowest correlations with FL and adjusted FL parameters mostly in the neck and the highest correlations by the majority in the femoral head. A direct comparison of DXA and trabecular structure parameters of the head was not possible, since DXA parameters were not measured in the femoral head due to the superimposition

with the acetabulum in in vivo examination conditions. To the Thiazovivin best of our knowledge, we applied for the first time an automated 3D segmentation algorithm on CT images of the proximal femur for trabecular bone structure analysis. This algorithm has already been used for trabecular BMD analysis [24]. Several automated VOI-fitting algorithms have been described for trabecular BMD analysis [6, 43], but none for trabecular bone structure analysis. Saparin et al. applied an automated 2D ROI placement on CT images of the femoral head and neck [44]. However, a 3D-based algorithm is essential to calculate 3D fuzzy logic,

SIM, and MF and thus is advantageous. A limiting factor of the algorithm was the manual corrections of segmentation in 14 cases (7.5% of all specimens). These corrections can induce operator-dependent Rutecarpine errors, but the determined reproducibility errors for segmentation indicated a good reproducibility of the morphometric parameters aside from app.TbSp in the neck. Reproducibility errors for segmentation and segmentation with repositioning were highest in the femur neck. Due to strong inhomogeneous bone structure in the femur neck, minor variations of the VOI position can induce major differences of the parameter values. Bauer et al. selected ROIs manually and reported highest reproducibility errors of the morphometric parameters also in the femur neck [13]. Reproducibility errors were considerably lower with our automated algorithm. They amounted to 0.11% to 9.41% for segmentation, compared to 1.8% to 31.3% using the manual technique of Bauer et al. This automated algorithm MLN2238 affords lower operator-dependent errors and additionally an enormous saving in time. The calculation of the trabecular bone structure parameters has limitations. Images have to be binarized to compute the morphometric parameters and MF. Standardization was achieved by using the reference phantom, but the results are strongly dependent on the chosen threshold.

Comparing the endometriosis after 15 and 30 days, there were no d

Comparing the endometriosis after 15 and 30 days, there were no differences

in these angiogenic markers, as shown in the histological scores (Table 1). Figure 4 Angiogenesis pattern of eutopic endometrium (A, D, G), and endometriotic lesions after 15 days (B, E, H) and 30 days (C, F, I). The immunoreactivity of VEGF and Flk-1 were detected mainly in the cytoplasm of endothelial (arrows) and glandular epithelial cells (arrowheads) but also in stromal cells (asterisks) in both selleck kinase inhibitor eutopic and ectopic endometrial tissues. As expected, VEGF and Flk-1 immunoreactions were more abundant in endometriosis than in the eutopic endometrium. The distribution of the ED-1-positive macrophages was observed in the cells in the stroma, concentrated around the glands. There were more activated macrophages in samples of endometriosis than in eutopic endometrium

(black squares). Magnification × 400. The presence of macrophages in the tissues was analyzed using the macrophage activation marker ED-1. This immunodistribution was observed in the cells in the stroma, concentrated around the glands (Fig. 4). The numbers of activated macrophages in samples of endometriosis were higher than in eutopic endometrium. In addition, the endometriotic lesions after 30 days contained more of these cells compared to those after 15 days, as shown in Table 1. Discussion The pathogenesis of endometriosis remains unclear, but it is generally considered that the development of pelvic Racecadotril endometriosis may be a consequence of implantation of viable endometrial selleck products tissue in ectopic sites via retrograde menstruation [21]. However, this theory fails to explain the presence of endometriosis in such remote areas as the lungs, skin, and lymph nodes. The coelomic metaplasia theory claims that formation of endometriomas in the ovary or rectovaginal endometriosis is caused by metaplasia of the coelomic epithelium, perhaps induced by environmental factors [22, 23]. In addition to the retrograde flow of exfoliated endometrium, new blood vessels

are essential for the survival of the implant, and therefore for the development of endometriosis. This study showed that, in a rat peritoneal endometriosis model, the angiogenic markers were related to the Selleck Batimastat establishment of the lesions, confirming that this model is suitable to investigate the angiogenesis process. The autotransplantation of uterine pieces into the peritoneal cavity is a well-established method for induction of endometriosis in rats [18, 24]. In the present study, this model of autologous endometrial explants was established at 15 days in 18 (90%) animals of 20, and the explants developed into large, ovoid, fluid-filled, well vascularized, cystic structures composed of endometrial elements. Any difference was observed in the macroscopic aspect of these cystic structures on 30 days, and also after that (90 days, data not shown).

Fems Microbiol Ecol 2007, 59:600–610 CrossRefPubMed 20 Trowbridg

Fems Microbiol Ecol 2007, 59:600–610.CrossRefPubMed 20. Trowbridge RE, Dittmar K, Whiting MF: Identification and phylogenetic analysis of Arsenophonus – and Photorhabdus -type bacteria from adult Hippoboscidae and Streblidae (BKM120 Hippoboscoidea). J Invertebr Pathol 2006, 91:64–68.CrossRefPubMed 21. Hansen AK,

Jeong G, Paine TD, Stouthamer R: Frequency of secondary symbiont infection in an invasive psyllid relates to parasitism pressure on a geographic scale in California. App Environ Microbiol 2007, 73:7531–7535.CrossRef 22. Semetey O, Gatineau F, Bressan A, Boudon-Padieu E: Characterization of a gamma-3 proteobacteria responsible for the syndrome “”basses richesses”" of sugar beet https://www.selleckchem.com/products/tpca-1.html transmitted by Pentastiridius sp. (Hemiptera, Cixiidae). Phytopathology 2007, 97:72–78.CrossRefPubMed 23. Šorfová P, Škeříková A, Hypša V: An effect of 16S rRNA intercistronic variability on coevolutionary analysis in symbiotic bacteria: molecular phylogeny of Arsenophonus triatominarum. Syst and App Microbiol 2008, 31:88–100.CrossRef 24. Perotti MA, Allen JM, Reed DL, Braig HR: Host-symbiont

interactions of the primary endosymbiont of human head and body lice. Faseb Journal 2007, 21:1058–1066.CrossRefPubMed 25. Sasaki-Fukatsu K, Koga R, Nikoh N, Yoshizawa K, Kasai S, Mihara M, Kobayashi M, Tomita T, Fukatsu T: Symbiotic bacteria associated with stomach discs of human lice. App Environ Microbiol 2006, 72:7349–7352.CrossRef 26. Fukatsu T, Koga R, Smith WA, Tanaka K, Nikoh N, Sasaki-Fukatsu K, Yoshizawa K, Dale C, Clayton DH: Bacterial endosymbiont of the slender pigeon selleck chemicals louse, Columbicola columbae , allied to endosymbionts of grain weevils and tsetse flies. Appl Environ Microbiol 2007, 73:6660–6668.CrossRefPubMed 27. Herbeck JT, Degnan PH, Wernegreen JJ: Nonhomogeneous model of sequence evolution indicates independent origins of primary endosymbionts

within the enterobacteriales (gamma-proteobacteria). buy Paclitaxel Mol Biol Evol 2005, 22:520–532.CrossRefPubMed 28. Baumann P: Biology of bacteriocyte-associated endosymbionts of plant sap-sucking insects. Annu Rev Microbiol 2005, 59:155–189.CrossRefPubMed 29. Lefevre C, Charles H, Vallier A, Delobel B, Farrell B, Heddi A: Endosymbiont phylogenesis in the Dryophthoridae weevils: Evidence for bacterial replacement. Mol Biol Evol 2004, 21:965–973.CrossRefPubMed 30. Heddi A, Charles H, Khatchadourian C, Bonnot G, Nardon P: Molecular characterization of the principal symbiotic bacteria of the weevil Sitophilus oryzae : A peculiar G+C content of an endocytobiotic DNA. J Mol Evol 1998, 47:52–61.CrossRefPubMed 31. Galtier N, Gouy M: Inferring pattern and process: Maximum-likelihood implementation of a nonhomogeneous model of DNA sequence evolution for phylogenetic analysis. Mol Biol Evol 1998, 15:871–879.PubMed 32. Tamura K: Estimation of the number of nucleotide substitutions when there are strong transition-transversion and G+C-content biases. Mol Biol Evol 1992, 9:678–687.PubMed 33.

References 1 Murphy TF: Respiratory infections caused by non-typ

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Table 3 Comparison of the growth/survival response to various env

Table 3 Comparison of the growth/survival response to various environmental conditions of S. Typhimurium ST4/74 with the response of single and double mutants Strains Description (deletions) Source Temp: 15, 37, 44°Ca NaCl: 2, 4% pH: 5, 9, 10, 11 H2O2: 15 mM ST4/74 Wild type Wray [62]         JTR.446 osmC This study – - – - JTR.452 yajD This study – - – - JTR.454 dcoC This study – - – - JTR.462 wraB* This study – - – - JTR.463 uspA* This study – - – - JTR.464 cbpA* This study

– - – - JTR.465 ychN* This study – - – - JTR.466 siiF(STM4262)* This study – - – - JTR.472 uspA/ychN This study – - – - JTR.473 uspA/osmC This study – - – - JTR.474 uspA/cbpA This study – - – - JTR.475 uspA/wraB This study – - – - JTR.476 uspA/dcoC This study – - – - JTR.477 uspA/yajD This study – - – - JTR.478 uspA/siiF(STM4262) buy Evofosfamide This study – - – + JTR.479 wraB/yajD This study – - – - JTR.481 wraB/ychN This study – - -

+ JTR.482 wraB/osmC This study – - – + JTR.483 wraB/dcoC This study – - – + JTR.484 wraB/ siiF(STM4262) This study – - – - JTR.485 wraB/cbpA This study – - – + JTR.486 ychN/cbpA This study – - – - JTR.487 ychN/yajD This study – - – + JTR.489 ychN/siiF(STM4262) This study – - – - JTR.490 ychN/dcoC This study – - – - JTR.496 cbpA/yajD Ruxolitinib solubility dmso This study – - – + JTR.498 cbpA/osmC This study – - – + JTR.499 cbpA/dcoC This study – - – - JTR.501 siiF(STM4262)/osmC This study – - – - JTR.502 siiF(STM4262)/yajD This study – - – - JTR.503 siiF(STM4262)/cbpA This study – - – - a: List of conditions at which differences were detected. Minus sign denotes no difference between mutant and wild type strain whereas plus sign denotes

that the ability to grow or to survive was significantly decreased in mutants. *Strains used for construction of double mutants. Figure 6 Growth of wild type and selected mutant strains of S. Typhimurium deficient in genes learn more identified as environmental hubs in LB at 37°C. Effect of single deletion of genes forming network hubs on the virulence of S. Typhimurium Virulence characteristics of seven of the eight genes were available from literature and were not repeated these in the present investigation. According to literature, strains deficient in ygaU, uspA, cbpA, ychN, siiF (STM4262) and dcoC were not significantly different from the virulence of the wild type strain [4, 17]. The single deletions of wraB or osmC were even reported to increase the virulence of the mutated strains [4]. Thus, none of these seven genes have been reported to be essential for virulence. Challenge assays in mice were conducted with the yajD mutant. The deletion of yajD proved not to have a significant influence on the outcome of the infection (Table 4). Table 4 Virulence of selected mutant strains Strains Description 1CI ± SD JTR.452 yajD 1.2 ± 0.3 JTR.481 wraB & ychN 1.9 ± 0.7* JTR.482 wraB & osmC 0.7 ± 0.2* JTR.490 ychN & dcoC 1.4 ± 0.9 JTR.498 cbpA & osmC 1.4 ± 0.3 JTR.499 cbpA & dcoC 0.4 ± 0.

, Tokyo, Japan), an atomic force microscope (AFM, NanoScope IV Ve

, Tokyo, Japan), an atomic force microscope (AFM, NanoScope IV Veeco Instruments Inc., Plainview, NY, USA), and a D/max-2550 PC powder X-ray diffractometer (XRD,

Rigaku Co., Tokyo, Japan). X-ray photoelectron spectroscopy (XPS) spectra were conducted on an Axis Ultra DLD X-ray photoelectron spectroscopy (Kratos Co., Manchester, UK). Fourier transform infrared (FTIR) spectroscopy investigations were performed Pifithrin-�� chemical structure on an IR Rrestige-21 FTIR spectrometer (Shimadzu Co., Kyoto, Japan). Results and discussion Comparatively, three solvents (IPA, dimethyl sulfoxide (DMSO), and N-methyl pyrrolidone (NMP)) were used to exfoliate the bulk BN for producing BNNSs. The Oligomycin A detailed characterization and analysis are given in Figure S1 in Additional file 1. It is found that under our experimental conditions,

the IPA is a better polar solvent to GDC-0449 nmr peel off the bulk BN among them. Figure 1 shows the low- and high-magnification FE-SEM images and XRD patterns of the bulk BN powders and exfoliated products using the IPA as the solvent. The low-magnification SEM image in Figure 1a presents the overall morphology of the precursor, which demonstrates that the bulk BN powders consist of irregular shapes and a few of thick flakes with lateral sizes ranging from hundreds of nanometers to several micrometers. The high-magnification SEM images in Figure 1b,c reveal the sufficient exfoliation of the bulk BN. Clearly, both the thickness and lateral sizes of the exfoliated products are decreased, forming h-BNNSs. Figure 1b shows the few-layered h-BNNSs which appear like the booming flowers and Figure 1c demonstrates the BN nanosheets with a rolling up edge. In addition, the two upper insets of photographs in Figure 1a,b show the precursor (a) and exfoliated products (b) both dispersed in IPA. It is found that the milk-white solution

Liothyronine Sodium of the h-BNNSs can remain stable for a long period, even more than 2 weeks. This is mainly because the exfoliated products are too thin to deposit, suggesting the sufficient peeling of the bulk BN by the presented chemical method. Comparatively, the precursor BN powders in the solution completely deposited on the bottom of the bottle in several minutes, leaving a transparent solution, which is clearly due to the large lateral sizes of the bulk BN precursor. In the XRD sample preparation process, in order to make the preferential orientation (002) planes on the holder as much as possible, the XRD sample was prepared as follows. First, the white powders of as-prepared BN nanosheets were dissolved in the ethanol with ultrasonic dispersion. Second, the dispersing solution was dropwise added on a glass holder which was cleaned by ethanol.

Authors’ contributions ESZ did the RAPD and WCP lysate experiment

Authors’ contributions ESZ did the RAPD and WCP lysate experiments and analyzed the bands using Gel Compar II, DVL suggested the use of outgroups and provided expertise in analyzing the results, and LBT was involved

in drafting the manuscript and revising it critically and served as PhD mentor for ESZ. All authors read and approved the final manuscript.”
“Background RNA interference (RNAi) is an evolutionary conserved mechanism KU55933 price found across a range of eukaryotes, where it plays a key role in post-transcriptional gene regulation and protection of genomes. The process of RNAi is triggered by the recognition of double-stranded RNA (dsRNA), which is then processed into 21–25 nucleotide sequences by Dicer, a cytoplasmic dsRNA specific RNaseII endonuclease [1]. The generated RNAs associate with an RNA-induced silencing complex (RISC) and unwind in a strand-specific manner [2]. The resulting short interfering RNAs (siRNAs) then target homologous mRNA for degradation in combination with the RNase H enzyme Argonaute (Slicer) [3]. The stage of double stranded (ds) RNA processing may be surpassed by Regorafenib solubility dmso experimentally introducing sequence-specific siRNAs directly into cells. Given the immense Public Health costs for malaria disease and the need for new drug targets a silencing approach employing RNAi might be extremely

beneficial for the development of novel and advanced therapeutic strategies. Moreover, the ability to use RNAi for gene silencing in Plasmodium would provide a powerful means to gain insight into pathogenic blood stages. Recent experiments performed by molecular genetics suggested that RNAi is not functional in malaria parasites [4]. These authors www.selleckchem.com/products/empagliflozin-bi10773.html showed that expression of the analyzed proteins continued despite the application of a variety of RNAi-based strategies to target genes which are non-essential to either growth or development of P. falciparum or P. berghei. In good agreement, control experiments with Trypanosoma brucei, a protozoan parasite with validated RNAi, were successful.

Furthermore, to determine whether a primitive RNAi machinery exists in Apicomplexa a comparative analysis of Apicomplexan and other protozoan genomes was undertaken. Taken together these data argued that RNAi is absent in malaria parasites [4]. Several studies, L-NAME HCl however, reported the successful application of RNAi for gene silencing in the erythrocytic stages of Plasmodium. A series of experiments has been performed by introducing long dsRNAs by electroporation into infected erythrocytes. Gissot and coworkers [5] performed silencing experiments with MybB1, a transcription factor in Plasmodium thereby demonstrating its essential role in the erythrocytic stage. Kumar and colleagues [6] showed in a similar manner the requirement of a serine-threonine phosphatase for DNA-replication in Plasmodium. Tuteja and colleagues [7] identified a signal peptidase that is required for intra-erythrocytic growth by RNAi.

MALDI-TOF MS data A total of 46 spectra representing the 23 strai

MALDI-TOF MS data A total of 46 spectra representing the 23 strains of O. anthropi were generated with the automated MALDI-TOF MS measurement. Protein mass patterns were detected in the mass range 2000–20,000 Da, were matched against Bruker Daltonics reference library, which included three O. anthropi ATCC strains, and resulted correctly identified at the species level (log score ≥ 2). In order to create reliable MSPs for phylogenetic analysis,

we measured a total of 368 spectra, 16 for each eFT-508 cell line strain. Each mass spectrum dataset was compared with the others, yielding a matrix of cross-wise relatedness computed with the default setting provided by Biotyper 2.0 (CCI matrix). A CCI value approaching 1.0 showed confirmation of the set of spectra at a high level of significance, and is shown in Figure 3 by the brown squares at the diagonal intersection of the samples (maximum = self-to-self correlation). Inter-sample INCB28060 nmr comparisons showed decreasing colour to yellow–blue, corresponding to decreasing GSK2245840 research buy degrees of correlation down to 0.02, the lowest match. Composite correlation index analysis for the 23 Ochrobactrum anthropi strains showed

similar inter-strain relatedness (Figure 3). Strains CZ1424 and CZ1443, as well as strains CZ1523 and CZ1504, isolated from the same patients but from two different sites, shared high degrees of similarity (over 80% and 85% respectively). Lower similarity, ranging from 60 to 80%, was found among strains CZ1427, CZ1429 and CZ1449,

also isolated from two different sites in the same patient. Strains CZ 1403, CZ1433 and CZ1442 showed Methane monooxygenase the lowest degree of similarity with other strains (less than 20%). At the other end of the scale, two strain clusters (CZ1439, CZ1442, CZ1443, CZ1449, CZ1454, CZ1458 and CZ1460, CZ1474, CZ1476, CZ1504, CZ1505, CZ1519, CZ1523, CZ1532, CZ1541) shared a high degree of similarity (up to 95%). Figure 3 Composite correlation index (CCI) matrix value for the strains of Ochrobactrum anthropi. Different colors indicate the correlation distance. CCI was calculated with MALDI Biotyper 2.0 software at the default settings: the lower boundary is 2000, the upper boundary is 20,000, the resolution of the mass range is four, and the number of intervals for CCI is four. A CCI value near 1.0 indicates relatedness between the spectral sets, and 0.02 indicates the lowest match. Based on the CCI data, a score-orientated MSP dendrogram was generated using the default setting of Biotyper 2.0, and included the 23 clinical strains and the 3 ATCC strains in the database (Figure 4). According to their mass signals and intensities, a hierarchic dendrogram clustered the 23 strains of O. anthropi in a single group, between 20 and 25 distance levels phylogenetically distinct from the ATCC isolates present in database.