title: Preparative isolation of lecithin.
mesh_terms: D000537:Aluminum Oxide; D002850:Chromatography, Gel / Q000379:methods; D005782:Gels; D010713:Phosphatidylcholines / Q000302:isolation & purification*; D058428:Silica Gel; D012822:Silicon Dioxide
chemical_list: D005782:Gels; D010713:Phosphatidylcholines; D058428:Silica Gel; D012822:Silicon Dioxide; D000537:Aluminum Oxide