mycoplasma synoviae expressed variable lipoprotein haemagglutinin (vlha) is believed to play a major role in pathogenesis of the disease by mediating adherence and immune evasion. the aim of this study was sequencing iranian m. synoviae isolates for the detection of nucleotide variation in the m. synoviae vlha gene. using oligonucleotide primers complementary to the single-copy conserved 5´ end...