title: Biological applications of electron ionization and chemical ionization mass spectrometry.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002087:Butyrates / Q000032:analysis; D007313:Insecta; D013058:Mass Spectrometry; D008722:Methods; D010455:Peptides / Q000032:analysis; D004364:Pharmaceutical Preparations / Q000032:analysis; D010675:Pheromones / Q000032:analysis; D011041:Poisoning / Q000175:diagnosis; D013057:Spectrum Analysis; D014688:Venoms / Q000032:analysis
chemical_list: D000596:Amino Acids; D002087:Butyrates; D010455:Peptides; D004364:Pharmaceutical Preparations; D010675:Pheromones; D014688:Venoms