Markers expressed by retinal glial cells. Expression of glial markers in the three morphological types of glial cells, marked by GFP. Oligodendrocyte morphology (a, d, g, g′, j), astrocyte morphology (b, e, h, h′, k), and intermediate morphology (diacyte) (c, f, i, i′, l). Antigens are indicated in column headings and are shown in red. Magenta arrows indicate colocalized signals, and yellow arrows indicate non-colocalization. Scale bar, 3 μm.