Equine herpesvirus-4TK mutant

摘要

An Equine herpesvirus-4 (EHV-4) mutant which does not produce a functional thymidine kinase due to a deletion and/or insertion in the gene encoding thymidine kinase, the deletion and/or insertion made at a position within the thymidine kinase gene such as to not substantially alter expression of the UL24 gene. Recombinant DNA comprising DNA of the EHV-4 mutant, host cells containing the recombinant DNA, and a process for the preparation of the EHV-4 mutant.