Prostaglandin synthase 1 gene disruption in mice reduces arachidonic acid-induced inflammation and indomethacin-induced gastric ulceration. - Langenbach,R.; Morham,SG.; Tiano,HF.; Loftin,CD.; Ghanayem,BI.; Chulada,PC.; Mahler,JF.; Lee,CA.; Goulding,EH.; Kluckman,KD.; Kim,HS.; Smithies,O. (Cell, 1995)