“The heteroexchange diffusion between D- and L-leucines also occurred at 37 degrees C. These findings were compatible with an assumption that there is a common pathway for D- and L-leucine transport in the tumor cells.”
“This difference in exchangeability of D- and L-leucines in temperature reduction seems to reflect that the bulky hydrocarbon side chains of both the isomers are bound to the different site of carrier as described in the preceding paper.”