A series of photomicrographs illustrating the coexpression of LepRb-Cre LacZ with pSTAT3. A–G: LepRb-Cre LacZ sections labeled for pSTAT3 (magenta) and LacZ (green). Coexpression was observed in (A) nucleus of the solitary tract (NTS), (B) in the dorsal raphe (DR) and periaqueductal gray (PAG), (C) in the DMH(d): dorsal medial hypothalamus dorsal part and DMH(v) dorsal medial hypothalamus ventral part, (D) in the arcuate nucleus (ARH), (E) in the lateral hypothalamus, (F) in the ventral premammilary nucleus (PMV), and (G) in the medial preoptic nuclei (MPO). Single-labeled cells appear green with uniform or punctuate cytoplasmic expression. Double-labeled cells have magenta/white nuclei with punctuate or uniform green cytoplasm. PMV double-labeled neurons are almost exclusively punctuate with respect to LacZ expression. Aq, aqueduct; 3v, third ventricle; cc, central canal; f, fornix. Scale bar =100 µm.