Figure 4: Chrysophanol rescued MNU-induced cone and rod degeneration on day 7.

(a) The rod photoreceptors (labeled by rhodopsin in green) primarily localized to the OS. (b) The cone photoreceptors (labeled by red/green opsin in green) primarily localized to the OS. CTRL: control; INL: inner nuclear layer; ONL: outer nuclear layer; IS: inner segment; OS: outer segment.