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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Eur J Pain. 2012 Dec 3;17(5):676–691. doi: 10.1002/j.1532-2149.2012.00245.x

Fig. 1. Withdrawal latencies following injection of DAMGO into the ventral aspects of the PAG.

Fig. 1

The three rows correspond to the three ages. The two columns show the two different test temperatures. The Y-axis is the mean withdrawal latency (± 1 SEM) and the dose of the drug is on the X-axis, including vehicle (Veh). The forepaw is denoted by circles, the hindpaw by squares and the tail by triangles. There was a general increase in antinociception in all three appendages with age. Withdrawal of the forepaw was increased consistently by DAMGO even at the highest temperature.