DISTRIBUTION OF AMPA-SELECTIVE GLUTAMATE-RECEPTOR SUBUNITS IN THE CATRETINA

Immunocytochemical techniques were used to localize AMPA-selective glu tamate receptor subunits in the cat retina. The antisera employed reco gnize GluR1, GluR2/3 or GluR4 subunits. Each antiserum produced a dist inctive staining pattern which included horizontal cells, cone bipolar cells, and amacrine and ganglion cells. Some cells such as alpha gang lion cells expressed multiple subunits whereas amacrine cells were typ ically immunoreactive with only one of the antisera.