US PATENT SUBCLASS 424 / 822
INVOLVING TK- VIRUS

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

822INVOLVING TK- VIRUS

DEFINITION

Classification: 424/822

INVOLVING TK- VIRUS:

(under the class definition) Subject matter involving a tk- virus, which produces no active thymidine kinase.