D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption D-xylose absorption