Fig. 6.

Combined activity of caspases 3 and 7, two closely related effectors of apoptosis, in epaulette shark brain (cerebellum) (A) and rectal gland (B) following control (normoxic), anoxic, and hypoxic exposure plus recovery (treatment codes as in text). Activity was determined using a luminescent assay (RLU, relative light units). Different lowercase letters indicate statistically distinguishable groups for brain as determined by Tukey's HSD post hoc test. Values for cerebellum are means ± SE from 4–6 individuals per treatment. Individual data points are presented for rectal gland due to small samples sizes in some treatments.