Fig. 1.

Oxidized LDL and TUNEL-positive cells are absent in the retina from a nondiabetic subject, but present in the retina from a subject with type 2 diabetes and proliferative diabetic retinopathy. Retinal sections were stained with anti-TUNEL antibody (green), antibody to oxidized LDL (red), and antibody to DAPI (blue). INL = Inner nuclear layer; ONL = outer nuclear layer; TUNEL = terminal deoxynucleotidyl transferase dUTP nick end labeling; DAPI = 4′,6-diamidino-2-phenylindole (fluorescent stain).