Figure 2. Sample ethidium bromide gel of real-time PCR products of gamma-aminobutyric acid_Aα1 (GABA_Aα1) and GABA_Aρ1 in cultured human RPE cells (representative image, n = 5). β–Actin (302 bp), GABA_Aα1 (211 bp); GABA_Aρ1 (263 bp). Abbreviations: NC, negative control; PC, human retina (positive control).