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Survival of E. coli transformants which accumulate zeaxanthin (Z-h), zeaxanthin diglucoside (Z-G), or zeaxanthin in combination with a binding protein (Z-P) after UV-B treatment at an intensity of 0.73 W/m2. C-2 is a carotenoid-free control containing the same plasmids as the other transformants but without insertions of carotenoid genes.
