Figure 4.

Post-pre change (Δ) in OR thickness for dark/light studies (i.e., the OR photoresponse) or dark/dark study for the uninjected controls (Uninj.), thrice-saline-injected control (3xSal.), dark-only controls given only MB/ALA (dark+AO), d-cis-diltiazem (DIL), and d-cis-diltiazem + MB/ALA (DIL+AO) groups. Both dark/light-exposed groups had a photoresponse different from 0 (asterisk), and both control groups' exposure to light (indicated by the bracket) was different from that of the dark+AO and DIL groups (horizontal line). MB/ALA restored the OR photoresponse to control values. Data presented as mean ± 95% confidence intervals.