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Two-photon fluorescence images and spectra of SREBP-1aCFP (a), SREBP-2YFP (b), SREBP-1aCFP/SREBP-1aYFP (c), SREBP-2CFP/SREBP-2YFP with a speckled fluorescence phenotype (d), SREBP-2CFP/SREBP-2YFP with a focal pattern (e), SREBP-1aCFP/SREBP-2YFP with a speckled fluorescence pattern (f), SREBP-1aCFP/SREBP-2YFP with a focal pattern (g), and SREBP-1aCFP/SREBP-2YFP with a diffuse fluorescence pattern (h). Scale bar, 10 μm. a.u., arbitrary units.
