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. Author manuscript; available in PMC: 2014 Aug 21.
Published in final edited form as: Brain Res. 2013 Jun 15;1527:29–39. doi: 10.1016/j.brainres.2013.06.010

Table 4.

Non-Significant Polynomial Regression Results of Mu-Opioid Receptor Label (Optical Density) and Total Song

Brain Region N F(df) R2 Adj. R2 p-value
POM 14 1.06(1,11) 0.16 0.009 0.38
PAG 14 0.911(1, 11) 0.14 0.01 0.43
BSTm 15 0.09(1,12) 0.02 0.14 0.91
VTA 13 0.46(1,10) 0.08 0.10 0.64
PVN 11 0.58(1,8) 0.13 0.09 0.58
SL 15 0.90(1,12) 0.11 0.01 0.43