Abstract
Previous experiments on model human bronchial epithelial (HBE) cells demonstrated reduced autofluorescence upon carcinogen transformation.1 Here we show that autofluorescence intensity differences between cell lines are mainly due to differing concentrations of protein-bound mitochondrial NADH (the reduced form of nicotinamide-adenine-dinucleotide), a cellular metabolic co-factor.
© 2002 Optical Society of America
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