| characterization of japanese isolates of aujeszky's disease virus by restriction endonuclease cleavage patterns, virulence in mice and thymidine kinase activity. | twenty four cloned isolates of aujeszky's disease virus collected from outbreaks of aujeszky's disease from 1981 through 1989 in japan were characterized by their restriction endonuclease (re) cleavage patterns, virulence for mice and thymidine kinase (tk) activity. all of the isolates belonged to type ii of the four types classified by herrmann et al. (1984). based on the number and migration rate of the restriction fragments, the isolates were divided into 7 groups with bam hi, 9 groups with k ... | 1992 | 1322716 |