A new technique for the direct production of recombinant baculovirus in the silkworm larvae is described. To assess the utility of this method, a combination of Bombyx mori nucleopolyhedroviral genome, transfer vector and Lipofectin was co-injected directly into newly ecdysed fifth instar, silkworm larvae. The recombinant virus was obtained from the hemolymph of injected larvae and the hemolymph then re-injected into the larvae as an inoculum. This resulted in a high-level production of foreign protein in the silkworm larvae. This technique produces easy and rapid recombinant protein production in silkworms.
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