Apoptotic degradation of progesterone-treated Xenopus oocytes. Cytochrome c release (a), caspase 3 activation (b), intracellular pH (c), intracellular ATP content (d), ADP/ATP ratio (e), and egg diameter (f). Bars in panel (f) indicate SD of the mean obtained by measurement of five eggs.
Tokmakov et al. BMC Cell Biology 2011 12:56 doi:10.1186/1471-2121-12-56