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A, pACCAR16ΔcrtX-Z; B, pACCAR16ΔcrtX; C, pACCAR16ΔcrtX and pUC18G; D, pACCAR16ΔcrtX-Z and pUC18G; E, pACCAR16ΔcrtX and pUC18; F, pACCAR16ΔcrtX-Z and pUC18. The pigments were identified as β-carotene (peaks 2, 4 and 7), 2,2′-dihydroxy-β-carotene (peak 3), zeaxanthin (peak 1, 6 and 8) and nostoxanthin (peak 5).
