Table 3.

Non-dioxin like PCB relative potency factors (RPF^a) in fish and mammals.

Congener	Fish Normalized Q20 (μM)	Fish RPF	Mammal EC2X (μM)b	Mammal RPF	Comparison (Ratio)
20	79.33	0.01	2c	0.11	0.05
28	-	-	5c	0.04	-
44	5.35	0.08	0.8c	0.28	0.29
52	1.40	0.31	0.49	0.45	0.69
66	10.66	0.04	2.38	0.09	0.44
77	-	-	5.00	0.04	-
95	0.43	1.00	0.22	1.00	1.00
99	15.53	0.03	2.80	0.08	0.35
101	1.03	0.42	0.86	0.26	1.64
110	NC	-	1.13	0.19	-
132	18.57	0.02	0.91	0.24	0.10
136	0.72	0.60	0.23	0.96	0.63
149	0.45	0.96	0.33	0.67	1.45
151	2.21	0.20	0.50	0.44	0.45
153	5.81	0.07	1.21	0.18	0.41
170	-	-	0.73	0.30	-
180	11.16	0.04	0.96	0.23	0.17
183	6.76	0.06	0.55	0.40	0.16
187	7.11	0.06	0.58	0.38	0.16
194	11.36	0.04	0.5c	0.44	0.09
				Average	0.50

^aRPFs shown relative to PCB 95

^bValues from Pessah et al. 2006

^cEstimated from Rayne and Forest 2010

notes: Inactive (−) or Not converged (NC)