Cell Death after Irradiation
Larvae were irradiated with 0R (−RAD) or 2000R (+RAD) of X-rays and allowed to recover for 15–18 hr (B, D, F, and H). Eye-antennae discs were extirpated and stained with AO without fixing. Anterior is to the left. Genotypes are as indicated. Disc size should not be compared directly because unfixed tissues are squashed by the coverslip to different degrees during mounting.