title: Letter: Prostaglandins, ulcerative colitis, and sulphasalazine.
mesh_terms: D000818:Animals; D003093:Colitis, Ulcerative / Q000188:drug therapy*; D005243:Feces / Q000032:analysis; D006801:Humans; D011448:Prostaglandin Antagonists / Q000627:therapeutic use*; D011453:Prostaglandins / Q000096:biosynthesis; D011458:Prostaglandins E / Q000032:analysis; D051381:Rats; D012460:Sulfasalazine / Q000627:therapeutic use*
chemical_list: D011448:Prostaglandin Antagonists; D011453:Prostaglandins; D011458:Prostaglandins E; D012460:Sulfasalazine