Fig. 1. Light micrographs and fluorescence micrographs of G. dibranchiata erythrocytes labeled with JC-1 (A-F) and TMRM (G-L) and exposed to control conditions (A,D,G,J), 1.9 mmol l^-1 sulfide (B,E,H,K), or 0.10 mmol l^-1 CCCP (C,F,I,L). Erythrocytes labeled with JC-1 were imaged in real color using a triple-bandpass filter set, as described in the text. Erythrocytes labeled with TMRM were counterstained with the nuclear dye Hoechst 33342, after which each dye was imaged in monochrome and pseudocolored for this figure. Scale bars, 10 µm.