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Spectral profile of fluorophores formed by incubating retinal with liposomes. Spectra shown are of a freshly prepared (—) and incubated ( . . .) retinal/liposome mixture and are representative of a typical experiment. A similar profile was produced in the presence of BSA. A typical spectral profile of lipofuscin isolated from five 60 to 69 year old donors (- -) is shown for comparison.
