Figure 2

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.