Effect of vaccines on the production of bactericidal activity and hemolymph lysozyme level in the silkworm (Bombyx mori L.)

The production of bactericidal activity and serum lysozyme level in the silkworm hemolymph were studied. Bacterial vaccines enhanced significantly the bactericidal activity in the pupal hemolymph by hemocoel. However, the serum lysozyme level were not affected by the vaccination. All attempts to increase serum lysozyme level by various vaccines were unsuccessful