Fig. 2.

Low power photomicrographs of the laminar distribution of AMPA subunits GluR1-, GluR2/3- and GluR4-IR neurons in the hamster SC. (A) Thionin-stained section showing the collicular lamination. (B) Anti-GluR1-immunoreactivity. GluR1-IR cells were distributed throughout the SC. (C) Anti-GluR4-immunoreactivity. GluR4-IR cells were selectively distributed in the lower lateral SGI and lateral SAI and formed clusters. (D) Anti-GluR2/3-immunoreactivity. As we previously reported (Park et al., 2004) GluR2/3-IR were concentrated within the SO and formed a dense band. Squares in (B–D). Indicate regions that are shown in higher magnification in (E–H). SAI, stratum album intermediale; SGI, stratum griseum intermediale; SGS, stratum griseum superficial; SP, stratum profundum; SO, stratum opticum; SZ, stratum zonale. Bar=200 µm (A–D) and 50 µm (E–H).