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The visual photoreception takes place in the retina, where specialized rod and cone photoreceptor cells are located. The rod outer segments contain a stack of 500–2,000 sealed membrane disks. Rhodopsin is the visual pigment located in rod outer segment disks, it is a member of the G‐protein‐coupled receptor (GPCR) superfamily, an important group of membrane proteins responsible for the majority of...
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