title: Letter: Influences of different batches of silicic acid on the chromatography of PGE.
mesh_terms: D002845:Chromatography; D011458:Prostaglandins E / Q000032:analysis*; D011460:Prostaglandins F / Q000032:analysis; D011863:Radioimmunoassay; D012824:Silicic Acid; D012822:Silicon Dioxide
chemical_list: D011458:Prostaglandins E; D011460:Prostaglandins F; D012824:Silicic Acid; D012822:Silicon Dioxide