title: The use of lecithin as a priming agent in gas liquid chromatography with electron capture detection at the picogram level.
mesh_terms: D002297:Cardanolides / Q000032:analysis; D002715:Chlormadinone Acetate / Q000032:analysis; D002849:Chromatography, Gas; D006908:Hydroxyprogesterones / Q000032:analysis; D008722:Methods; D008832:Microchemistry; D010713:Phosphatidylcholines
chemical_list: D002297:Cardanolides; D006908:Hydroxyprogesterones; D010713:Phosphatidylcholines; D002715:Chlormadinone Acetate