Expression of Fos and one molecular marker (Dbh, Npy, Cck, Gcg or Vgat (Slc32a1)) in the NTS, or Calca and Cck in the PB, were determined using FISH. Co-expressing cells were counted in the NTS, PBe, or PBd. Colocalization is reported as total number of Fos expressing Dbh, Npy, Cck, Gcg, Calca, or Vgat cells per analyzed section, or percentage of Fos+ Calca+ neurons for LiCl experiments.
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