Table 2. Relationship Between CP 55 940 Potency to Decrease Food-Maintained Responding and CP 55 940 Self-Administration.

Subject	ED50(95% confidence interval)	Max injections (SD)
R-1567	0.007 (0.006–0.008)	20.67 (1.16)
R-1691	0.006 (0.004–0.009)	11.67 (1.16)
R-1690	0.006 (0.004–0.009)	6.67 (0.58)
R-1693	0.0009 (NA)	1 (0)
R-1682	0.003 (0.001–0.01)	2.0 (1.73)
R-1711	0.001 (0.0006–0.002)	1.67 (0.58)
R-1713	0.003 (0.002–0.006)	1.33 (0.58)
R-1756	0.003 (0.001–0.008)	2.33 (1.53)