Pyrrolizidine ester alkaloid in danaid butterflies.
D000818:Animals; D002849:Chromatography, Gas; D007313:Insecta / Q000032:analysis*; D010675:Pheromones / Q000302:isolation & purification*; D011763:Pyrrolizidine Alkaloids / Q000302:isolation & purification*
D010675:Pheromones; D011763:Pyrrolizidine Alkaloids