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Aerobic growth of Saccharomyces cerevisiae xylose reductase/xylitol dehydrogenase and xylose isomerase strains. (A) Yeast nitrogen base/arabinose medium and (B) yeast nitrogen base/xylose medium. Solid line, filled symbols: xylose reductase/xylitol dehydrogenase strain; dashed line, open symbols: xylose isomerase strain.
