n Dutch pioneer microscopist who was among the first to recognize cells in animals and who gave the first accurate descriptions of microbes and spermatozoa and blood corpuscles (1632-1723)
n Russian revolutionary and Communist theorist who helped Lenin and built up the army; he was ousted from the Communist Party by Stalin and eventually assassinated in Mexico (1879-1940)
n drug (trade name Lorfan) that is related to morphine but that counteracts the respiratory depression produced by morphine poisoning but without affecting its analgesic effects