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Cepharanthine, isolated fromStephania cepharantha, is one of the bisbenzylisoquinoline-type alka-loids. We have found that it inhibits tumor promotion after topical application in two-stage(More)
The bisbenzylisoquinoline alkaloid cepharanthine, which has been considered to exhibit antiperoxidation activity due to its membrane stabilizing effect, was found to scavenge radicals such as .OH and(More)
Two species of giant hornet phospholipase B (PLB), alpha and beta, were purified from the venom of Vespa mandarinia. The purification procedure was simplified by two steps of column chromatographies,(More)