CULTIVATION OF PSEUDORABIES VIRUS.
Pseudorabies virus has been cultivated in series in rabbit testicle, guinea pig testicle, and chick embryo media, and its growth requirements have been studied. Intranuclear inclusions, similar to those produced by pseudorabies virus in vivo, have been found in rabbit testicle cultures. The virus has not changed its pathogenic properties for rabbits, guinea pigs, or mice during the course of cultivation.
Department of Animal and Plant Pathology of The Rockefeller Institute for Medical Research, Princeton, N. J.
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