D-xylose(out) + 2 Na(+)(out) <=> D-xylose(in) + 2 Na(+)(in)
d-xylose(out) + 2 na(+)(out) <=> d-xylose(in) + 2 na(+)(in)
D-xylose(out) + 2 Na(+)(out) <=> D-xylose(in) + 2 Na(+)(in)
d-xylose(out) + 2 na(+)(out) <=> d-xylose(in) + 2 na(+)(in)