Figure 2. A comparison of protein content of CST in the retina from diabetic and nondiabetic donors. The upper panel shows a comparison of CST-29 immunofluorescence (red) in the human retina between representative samples from a non diabetic donor (A) and a diabetic donor (B). The bar represents 20 μm. Lower panel: quantification of CST-29 immunofluorescence in non-diabetic and diabetic retinas. The following abbreviations are used in the figure: retinal pigment epithelium (RPE); outer nuclear layer (ONL); inner nuclear layer (INL); and ganglion cell layer (GLC).