Figure 1. Human retinal ECs and PCs express the CysLTR1 protein and secrete CysLTs. A: Retinal ECs from three different donors (D1, D2, and D3) and (B) retinal PCs from three different donors (D4, D5, and D6) were labeled to visualize CysLTR1 protein expression. C: Secondary antibody-only controls. D: CysLT secretion from EC monolayers, apical and basal media, and PCs under standard and high-glucose culture conditions. The data are presented as bar graphs and scatterplots ± SDs, n = 3.