Abstract
1. 1. α-Aminoisobutyric acid is actively accumulated by the epithelium of the cornea of the toad, Bufo marinus, resulting in a tissue to medium ratio of 4 to 1 after 40 min of incubation.
2. 2. The accumulation of α-aminoisobutyric acid is ouabain-sensitive and dependent upon the presence of extracellular sodium.
3. 3. Transport is inhibited by carbon monoxide, 6-aminonicotinamide, arsenite and n-heptyl-3-hydroxy-quinoline-M-oxide and stimulated by diamide.