Fig. 2.
Competition curves for Pro8-OT and Leu8-OT for each primate species OTR. Increasing concentrations of competitor ligand (Pro8-OT, Leu8-OT, or AVP) were added to a constant concentration of 125I-OVTA in intact CHO cells expressing one of four primate OTRs. All values are expressed as the percentage of the maximal binding in the absence of OT or AVP.