1. Prostaglandins Reverse Inhibition of Electrically-Induced Contractions of Guinea Pig Ileum by Morphine, Indomethacin and Acetylsalicylic Acid;Ehrenpreis;Nature,1973
2. Failure of prostaglandins to Participate in the Inhibitor Response of the Guinea-Pig Ileum to Morphine;Gintzler,1974
3. Evidence Against Prostaglandin E Having a Physiological Role in Acetylcholine Liberation from Auerbach's Plexus of Guinea-Pig Ileum;Hazra;Experientia,1975
4. Morphine Receptors as Regulators of Adenylate Cyclase Activity;Sharma,1975
5. Morphine Antagonizes Action of Prostaglandin in Neuroblastoma and Neuroblastoma X Glioma Hybrid Cells;Traber;Nature,1975