Fig. 3.

Anatomical distributions of amygdala projecting neurons in the CeA (A-C) and in the BLA (D-E) revealed by genetic controlled retrograde tracing. Amygdala neurons projecting (tdTomato+; red labeled) to the vlPAG and neurons projecting (GFP+, green labeled) to the mPFC could be seen within both CeA and BLA. Interestingly double labeled neurons (yellow labeled) reveal the existence of many bifurcating neurons projecting to both vlPAG and mPFC. Bifurcating neurons can be seen within the CeA (indicated by arrows in C) as well as within the BLA (indicated by arrowheads in F). Scale bar = 100 μm. CeAm = medial aspect of the CeA, Opt = Optic chiasm, GPI = Globolus pallidus internus.