Abstract
Effects of virus infections on the synthesis activity of hemolymph proteins in the silkworm, Bombyx mori L., were studied by means of agarose-gel electrophoresis and autoradiography of the electrophoretic pattern with 14C-amino acids. In the nuclear-polyhedrosis larva, hypoproteinemia was detected by electrophoresis after the mid-stage of infection and incorporation of 14C-amino acids into hemolymph proteins was markedly on the decrease, indicating that an inhibited synthesis of hemolymph proteins was induced by the virus infection. On the other hand, the electrophoretic pattern and the concentration of the hemolymph proteins from the cytoplasmicpolyhedrosis larva, even in the late stages of infection, were similar to those from the uninfected larva. Autoradiographs of the electrophoretic pattern with radioactive amino acids also indicated that the synthesis activity of hemolymph proteins of the diseased was comparable to that of the uninfected larva.
