Origin of the methylenedioxy groups of the alkaloid protopine.
D000470:Alkaloids; D053119:Benzophenanthridines; D001600:Berberine Alkaloids; D006801:Humans
D000470:Alkaloids; D053119:Benzophenanthridines; D001600:Berberine Alkaloids; C009093:protopine
ALKALOIDS