Opium - ț̢
The air-dried exudate from the unripe seed capsule of the opium poppy, Papaver somniferum, or its variant, P. album. It contains a number of alkaloids, but only a few - MORPHINE; CODEINE; and PAPAVERINE - have clinical significance. Opium has been used as an analgesic, antitussive, antidiarrheal, and antispasmodic.
Synonyms : Pantopon, Roche Brand of Papaveretum
Oplopanax - ț̢
A plant genus in the family ARALIACEAE, order Apiales, subclass Rosidae. It is the source of cirensenosides (triterpenoid saponins).
Opossums - ț̢
New World marsupials of the family Didelphidae. Opossums are omnivorous, largely nocturnal and arboreal MAMMALS, grow to about three feet in length, including the scaly prehensile tail, and have an abdominal pouch in which the young are carried at birth.
Synonyms : Opossum
Opportunistic Infections - ț̢
An infection caused by an organism which becomes pathogenic under certain conditions, e.g., during immunosuppression.