Immunolabeling of rhodopsin and retinochrome in a <i>D</i>. <i>pealeii</i> central fin muscle cross-section.

<p>(A) Rhodopsin (green) labeling only; (B) retinochrome (red) labeling only. (C) Overlap of rhodopsin and retinochrome labeling in large muscle bundles (mb) parallel to dermal tissue appears yellow. Blue shows autofluorescence of the tissue. Scale bar, 25μm.