No abstract

Bacterial leaf spot of poinsettia has been first reported in China in 2003 and ascribed to Xanthomonas campestris pv. poinsettiicola following the traditional classification of xanthomonads. The present study was undertaken to elucidate the precise position of the causal bacterium in the newly proposed classification of xanthomonads, three bacterial isolates from China were compared with all known Xanthomonas type strains by a polyphasic approach including carbon source utilization profile, fatty acid methyl esters, analysis of 16S rRNA gene sequence and 16S-23S rDNA intergenic spacer sequences. The results indicated that these Chinese isolates could be further identified as a pathovar of Xanthomonas axonopodis.

Objectives: To investigate and compare the detection accuracy of bony defects on the condylar surface of the temporomandibular joint (TMJ) in cone beam CT (CBCT) images scanned with standard and large view protocols on the same machine. Methods: 21 dry human skulls with 42 TMJs were scanned with the large view and standard view protocols of the CBCT scanner Promax 3D (Planmeca, Helsinki, Finland). Seven observers evaluated all the images for the presence or absence of defects on the surface of the condyle. Using the macroscopic examination of condylar defects as the gold standard, receiver operating characteristic (ROC) analysis was performed. Results: Macroscopic examination revealed that, of the 42 condyles, 18 were normal and 24 had a defect on the surface of the condyles. Areas under the ROC curves for the large view and the standard view group of CBCT images were 0.739 and 0.720, respectively, and no significant difference was found between the two groups of images (p 5 0.902). Neither the interobserver nor the intraobserver variability were significant. Conclusions: The two scanning protocols provided by the CBCT scanner Promax 3D were reliable and comparable with detection of condylar defects.