Fig. 3. Photoreceptor current (PRC) in wild-type and lsp1 mutant cells. (A,B) Typical waveforms observed when a flash (3.0x1018 photons m-2) was applied to wild-type (A) and lsp1 (B) cells at the time indicated by arrows. (C) Light dependence of the PRC in wild type (squares) and lsp1 mutant (circles). Averages and standard deviations from four experiments are plotted.