| the isolation of lentogenic strains of newcastle disease virus in australia. | twelve isolations of newcastle disease virus were made from 77 clinical samples from chickens from conjunctivitis, respiratory disease, proventriculitis and bursal atrophy. nine of the isolations were made from chickens with conjunctivitis. the viruses were identified as newcastle disease virus by inhibition of their haemagglutinins with specific antiserum to newcastle disease virus. the viruses failed to kill chicken embryos after inoculation into the allantoic cavity and they were judged to be ... | 1978 | 687276 |