Figure 1. LDH activity and ATP concentrations in the retina. WT and xCT KO retinal homogenates were collected and measured for LDH activity (A) or ATP concentrations (B) in 6-week, 3-month, 6-month, 9-month, and 12-month-old WT (blue) and xCT KO (red) mice. Values represent mean ± SEM (n = 6).