Identification of ptototheca zopfii from bovine mastitis

The aim of this study was identification of the epidemiology of Prototbeca zopfu species from the milk samples of dairy cattle in Isfahan, central Iran. Milk samples were obtained from 230 daily cattle, 130 with and 100 without mastitis, in Isfahan. The samples were cultured in Prototbeca Isolation Medium [PIM] and Sabouraud's dextrose agar. All P. zopfu isolates were identified by morphological and biochemical methods. Then, as a confirmatory test they wrere examined by genotype-specific PCR. Four P. zopfu strains [3.07° o] were isolated from the 130 samples of dairy cattle with clinical mastitis and there was no isolation from totally 100 samples of healthy bovines without mastitis. Specific PCR product [about 946 bp] was detected in four isolates. It seems that P. zopfu genotype II plays a key role in affecting bovine mastitis that confirmed other previous studies. Our study was the first, which identified the Prototheca species by traditional and molecular methods in Iran and Middle East as well

[ relationship between lower facial height and maxillary and mandibular lengths based on Harvold analysis in Mashhad high school students]

Introduction: at the end of an orthodontic treatment, the coordination between different facial dimensions is very important. The changes in facial height cause changes in other dimensions. In the present study, the relationship between lower third of facial height and maxillary and mandibular lengths was evaluated and compared with the previous studies

Materials and Methods: in this study, 38 lateral cephalograms of Mashhad high school students aged 16- 19 with mean age of 17 years were selected and traced manually. The profile, occlusal relationship, overjet and overbite in these cases were normal and molar and canine relationships were class I. The data were analysed using SPSS software [version 10] and t-student test was used for analysis

Results: the findings were as follow: *the relationship between lower third of facial height and both the length of I mandibular base and the length of mandible based on Harvold analysis was significant. *The relationship between the lengths of both the maxilla and anterior cranial base, and lower third of facial height were not significant. *No relationship was found between the length of maxillary base [based on Harvold analysis] and lower third of facial height

Conclusion: according to this investigation, it is concluded that the length of mandibular base has a significant correlation with the lower third of facial height, but such a correlation does not exist between maxilla and lower third of facial height