“The inhibitory action of iodine on cycloleucine transport was …, with full recovery occurring within 24 h. Iodine similarly inhibited the cellular uptake of [14C] alpha-methylaminoisobutyric …-aminoisobutyric acid in the presence of 30 mM methyl-alpha-aminoisobutyric acid , that is of specific probes for … of neutral amino acids, respectively.”