thalidomide: a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis
teratogen: any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples
humulus: hops: hardy perennial vines of Europe, North America and central and eastern Asia producing a latex sap; in some classifications included in the family Urticaceae