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. Author manuscript; available in PMC: 2007 Oct 1.
Published in final edited form as: Pharmacol Biochem Behav. 2007 Apr 3;87(1):1–10. doi: 10.1016/j.pbb.2007.03.014

Figure 2.

Figure 2

Photographs showing relevant pigmentation patterns for the present experiments: A. Albino SD rat; B. Hooded LE rat; C. F1 rat with intermediate pigmented area; and D. Ventrum of LE rat, showing unpigmented region used for sc injection in Experiment 1.