Diagrammatic representation of kainate (KA) sensitivity of various neurochemically identified cell populations in the rat inner retina. Annotations below cell images indicate the neurochemical cell class and the half-maximal activation concentration for that class. Data are based on dose activation curves in Figures 3, 10, and 12. For Chat ACs and type 2, 3, and 4 BCs, estimates of half-maximum concentration have been made from immunolabeling. Abbreviations: INL, inner nuclear layer; GCL, ganglion cell layer; BC, bipolar cell; AC, amacrine cell; GC, ganglion cell; GABA, γ-aminobutyric acid; Gly, glycine; Glu, glutamate.