title: Pepsin digestibility method for animal proteins: 1971 collaborative study.
mesh_terms: D000818:Animals; D001673:Biodegradation, Environmental; D001798:Blood Proteins / Q000032:analysis; D005241:Feathers / Q000032:analysis; D005374:Filtration; D005396:Fish Products / Q000032:analysis; D008460:Meat / Q000032:analysis; D010434:Pepsin A; D011202:Poultry Products / Q000032:analysis; D011506:Proteins / Q000032:analysis*
chemical_list: D001798:Blood Proteins; D011506:Proteins; D010434:Pepsin A