Figure 7 of Anderson, Mol Vis 2011; 17:355-379.

Figure 7. TH+ (tyrosine hydroxylase immunopositive) cells have glutamatergic, not GABAergic signatures. The nine panels show nine TH+ cells from a single rabbit retina (A-I), probed for TH, glutamate and GABA in serial 200 nm sections. Each panel shows four mappings: upper left TH (yellow) + glutamate (blue), upper right TH (yellow) + GABA (red), lower left glutamate alone (cyan), lower right GABA alone (yellow). The location of each TH+ cell is circled. Each TH+ cell has a glutamate signal higher than the surrounding amacrine cell somas and equivalent to that of a ganglion cell. TH+ cells have no measurable GABA signal. Scale, 10 μm.