Deletion mutant of pseudorabies virus and vaccine containing sai

Details Deletion mutant of pseudorabies virus and vaccine containing sai Deletion mutant of pseudorabies virus and vaccine containing sai

1987-07-28

1991-07-02

Weimar, Elizabeth C.

Drug, bio-affecting and body treating compositions

Lymphokine

4351723, 435236, 4351721, 4352351, A61K 3912, C12N 1500, C12N 704

Patent

active

050284266

ABSTRACT:
A thymidine kinase deficient live deletion mutant of pseudorabies virus is provided. The mutant, designated PRV783 was derived from the live deletion mutant strain 2.4N3A by deleting a 19 bp sequence from the BamHI fragment 11 of strain 2.4N3A into which had been inserted an EcoRI restriction site at a unique cleavage site in fragment 11 for the restriction endonuclease XhoI. The 19 bp deletion encompasses the inserted EcoRI site in fragment 11 of strain 2.4N3A. PRV783 is useful for preparing vaccine compositions to immunize susceptible animals against infection by pseudorabies virus.

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