Shearin N L, Pancoe W L
Experientia. 1976 Dec 15;32(12):1553-4. doi: 10.1007/BF01924448.
Administration of exogenous prostaglandin E1 resulted in an increase in contractility of rat fundic muscle measured in vivo; a significant decrease in fundic tissue levels of cyclic- adenosine monophosphate and a significant increase in cyclic-guanosine monophosphate.