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Growth assays of various yeast strains in media containing 50 μm cadmium. A, Effect of transformation by AtOPT6 and/or GSH addition; 154 is the wild-type strain; 822 is a hgt1 mutant strain; AtOPT6 refers to the 822 strain carrying the pDR/AtOPT6 plasmid. GSH indicates that GSH was present at a final concentration of 50 μm in the medium. B, Effect of transformation by AtOPT7 and/or GSH addition. All experiments were repeated three times with similar results.
