random amplified polymorphic dna (rapd) fingerprinting of mycoplasma gallisepticum isolates from chickens

ten field isolates of mycoplasma gallisepticum (mg) from different geographical areas of iran were analyzed by random amplification of polymorphic dna (rapd). rapd analysis produced reproducible banding patterns on the basis of which various distinct amplification patterns could be detected. mg isolates compared with reference strains (s6 and mg ss) and vaccine strain (ts-11) and demonstrated distinct rapd profiles. the results indicated genotypic diversity and heterogeneity among mg isolated from field, which can be used for epidemiological studies and for differentiation between vaccine strain, and field isolates.