Abstract

Total lipids were determined in the hemolymph of the silkworm, Bombyx mori, infected with nucleopolyhedrosis virus. In the phospholipid fraction lecithin, phosphatidylserine, and phosphatidylethanolamine were detected. Hydrolysis of phospholipid gave two substances which were not identified. One of them gave a positive reaction with the iodine vapor test and the other gave positive reactions both with the iodine vapor and the ninhydrin tests. Cholesterol was identified as the only component of the cholesterol fraction in the body fluid of diseased as well as of normal silkworms. Fatty acids increased when polyhedra were released into the body fluid. Palmitic and stearic acids were detected, together with an unidentified fatty acid, as the components of the fatty acid fraction.

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