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SWS1 and SWS2B are coexpressed in single cones. (A) In situ hybridization shows SWS1 (cyan) is expressed in single cones but not in double cones. (B,C) Nearly all single cones express SWS1 (B, cyan). Single cones may also express SWS2B (C, violet, and merged image D). Grey arrow indicates a coexpressing single cone (B–D). Some single cones (cyan arrow) express SWS1 only. Scale bar: 25 µm.
