MODIFIED LIVE PSEUDORABIES VIRUSES, VACCINES FOR PSEUDORABIES DISEASE CONTAINING SAME, METHODS FOR PRODUCTION OF SAME AND METHODS FOR USE OF SAME

摘要

Temperature-resistant pseudorabies viruses which fail to produce any functional TK as a result of mutagen-induced mutation and temperature-resistant pseudorabies viruses which fail to produce any functional TK as a result of a deletion in the tk gene, vaccines containing same, methods for production of same and methods for use of same.