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Smith WC, Adamus G, Van Der Wel H, Timmers A, Palczewski K, Ulshafer RJ, Hargrave PA, McDowell JH.Smith WC, et al. Among authors: ulshafer rj.Exp Eye Res. 1995 Nov;61(5):569-78. doi: 10.1016/s0014-4835(05)80051-x.Exp Eye Res. 1995.PMID: 8654500