Fig. 10.

Astroglial expression of mGluR3 in ERC layer II. (A–G) Immunolabeling for mGluR3 was observed in PAPs with receptor expression being focused near the axospinous, excitatory synapse. A dendritic spine in (C) is also reactive against mGluR3 in extrasynaptic locations near the SER spine apparatus (pseudocolored in pink). Synapses are between black arrows. Color-coded arrowheads point to mGluR3 (yellow) immunoreactivity. Profiles are pseudocolored for clarity. Ax, axon; Sp, dendritic spine; Mit, mitochondria. Scale bars, 200 nm.