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Cone visual pigments are present in gecko rod cells.
Kojima D, Okano T, Fukada Y, Shichida Y, Yoshizawa T, Ebrey TG. Kojima D, et al. Proc Natl Acad Sci U S A. 1992 Aug 1;89(15):6841-5. doi: 10.1073/pnas.89.15.6841. Proc Natl Acad Sci U S A. 1992. PMID: 1379723 Free PMC article.