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. Author manuscript; available in PMC: 2015 Sep 29.
Published in final edited form as: Neuroscience. 2012 Jan 5;205:112–124. doi: 10.1016/j.neuroscience.2011.12.036

Fig. 8.

Fig. 8

Photomicrographs of PHA-L-labeled mPFC projections (black) to the left amygdala in cases R37 (A1 and A2), R38 (B1 and B2), and R39 (C1 and C2) at two rostrocaudal (bregma −2.2: A1, B1, C1; bregma −2.6: A2, B2, C2) (lateral is to the right). MOR-labeled ICNs are brown. In all three cases there were dense projections to the MOR-negative CITZ, and light to moderate projections to the MOR-positive medial ICNs. In cases R37 and R39 the same pattern of labeled axons was also seen in the right amygdala due to the similarity of the placement of the injection sites on the two sides of the brain. This was also seen in case R38, with the exception of the projection to the CITZ, which was more dense on the left side (B1) than the right side (not shown). Since the injection site on the right side of R38 had greater involvement of the IL (see above), these findings suggest that the projection of the IL to the contralateral CITZ is more dense than the ipsilateral projection. Scale bar (in A1) = 100 μm and is valid for all six photomicrographs.