Boxplots of basal cell area (F) shown for regions indicated in (B) and (C) (PR, photoreceptor; N, non-photoreceptor within the P region). (E) and (F)n= 5 eye discs (13 A clones, 13 AC clones, 18 MF clones, 23 PR clones, and 23 N clones); *:p< 0.05, ***:p< 0.001, ns, not significant (t test).