RECOVERY OF FERTILITY AND EXPRESSION TYPE OF XANTHINE DEHYDROGENASE DEFICIENT MUTANT OG, OGT AND OQ OF SILKWORM AND UTILIZATION OF ITS PROGENY

摘要

PROBLEM TO BE SOLVED: To recover the fertility and the expression type of a xanthine dehydrogenase deficient mutant og, etc., of silkworm to effect the recovery of the transparency of the skin and the infertility of the worm and enable the use of the worm as a host by administering a xanthine dehydrogenase deficient mutant og, etc., of silkworm with xanthine oxidase. ;SOLUTION: Xanthine dehydrogenase deficient mutants og, og^t and oq of silkworm are administered with xanthine oxidase (the administration dose is preferably 2.5 mg per one silkworm) to recover the fertility and the expression type of the xanthine dehydrogenase deficient mutants og. og^t and oq of silkworm. The xanthine dehydrogenase deficient mutants og, og^t and og of silkworm having recovered fertility and expression type are utilizable as host organisms for the introduction of an exogenous gene.;COPYRIGHT: (C)1999,JPO