Comparison of antimicrobial activities to E. coli and S. aureus in the hemolymph of HIL immunized with E. faecalis, S. marcescens, L. acidophilus, L. brevis, L. casei, L. fermentum, or L. delbrueckii. N indicates non-immunized hemolymph of H. illucens. Lane 1, hemolymph of S. marsescen-immunized HIL; lane 2, hemolymph of E. faecalis-immunized HIL; lane 3, hemolymph of L. casei-immunized HIL; lane 4, hemolymph of L. acidophilus-immunized HIL; lane 5, hemolymph of L. brevis-immunized HIL; lane 6, hemolymph of L. fermentum-immunized HIL; lane 7, hemolymph of L. delbrueckii-immunized HIL. The values of column graphs are presented as the mean ± S.D. * and ** indicate p < 0.05 and p < 0.01 vs. normal control (N), respectively.