Fig. 2. Transcription by mitochondria isolated from Artemia franciscana embryos is depressed by anoxia and low pH. (A) Control mitochondria (normoxia, pH 7.9; circles) are compared with organelles isolated under anoxia from anoxic embryos and assayed anoxically at pH 6.4 (triangles). (B) Control mitochondria (circles) are compared with organelles isolated under anoxia from anoxic embryos and assayed anoxically at pH 7.9 (triangles). (C) Control mitochondria (circles) are compared with normoxic mitochondria incubated at pH 6.4 (triangles). Note different timescales along the x-axis. All values are means ± S.E.M. (N=3).