title: Preparation of bovine platelet aggregating factor (PAF).
mesh_terms: D000818:Animals; D002417:Cattle; D002457:Cell Extracts / Q000302:isolation & purification*; D011232:Chemical Precipitation; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004587:Electrophoresis, Agar Gel; D004591:Electrophoresis, Polyacrylamide Gel; D010974:Platelet Aggregation; D014020:Tissue Extracts / Q000302:isolation & purification*
chemical_list: D002457:Cell Extracts; D014020:Tissue Extracts