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This image shows a macaque retina immunostained for the voltage-gated potassium channel subunit, KV2.2 (green), red/green-cone opsin (red), and blue cone opsin (blue). The KV2 channel subunits interacts with the KV8.2 modifier subunit in photoreceptor inner segments where they underlie a potassium current important for normal photoreceptor function. For more information see the article by Gayet-Primo et al. (pages 3414–3427).