background cholera is a severe diarrheal illness caused by vibrio cholerae, which produces a virulence factor named el tor hemolysin encoded by the hlya gene. objectives this study meant to analyze the phenotypic characteristics and presence of hlya gene in v. cholerae isolated from patients in iran. the hlya gene which codes for hemolysin, plays an essential role in manifestation of cholera ,a...

background brucellosis is the most common global zoonosis and an important public health problem in many parts of the world including iran. diagnosis of brucellosis is frequently difficult to establish and conventional methods are not always successful in identifying the organisms. rapid detection of brucella species by an automated blood culture system and polymerase chain reaction (pcr) may l...

background: some dynamic changes occurs during spermatogenesis such as histone removal and its replacement with transition nuclear protein and protamine. these proteins are required for packing and condensation of sperm chromatin. jhdm2a is a histone demethylase that directly binds to promoter regions of tnp1 and prm1 genes and controls their expression by removing h3k9 at their promoters.objec...

To determine whether polymerase chain reaction (PCR) testing in the initial diagnosis of pulmonary tuberculosis (TB) is cost-effective in a low-prevalence population, an economic evaluation was carried out between the smear and culture (NOPCR) and smear, culture and PCR (+PCR) strategies. A decision tree model based on retrospective laboratory data was developed to assess the strategies of test...

Sex determination in infants and children with ambiguous genitalia usually necessitates time-consuming and costly karyotyping .We have evaluated a simple,rapid and reliable method of postnatal sex determination by amplification of X and Y specific microsatellite markers DXS6797 and SRY respectively by polymerase chain reaction(PCR). Three probands M78, M59 and M61 with ambiguous genitalia were ...