Fig. 3.
PR-ir is found in dendrites and glia. (A) A cluster of PR-ir (arrowhead) is in the cytoplasm of a dendrite (PR-D). An unlabeled terminal (uT) contacts (arrow) the PR-containing dendrite. (B) PR-ir (arrowhead) is in an astrocytic process identified by glial filaments (gf) that forms a gap junction (arrow) with an unlabeled astrocytic profile (uAst). Bar, 500 nm.