“…In contrast, indicating a faster basolateral response to the increased flux of sodium across the brush-border membrane (Schultz,198l), only very moderate degrees of depolarizations have been observed in mammalian small intestines (Rose & Schultz, 1971). In agreement with these observations, in the rabbit ileum Jm Ala was not significantly inhibited by glucose or galactose (Chez, Schultz & Curran, 1966) and in the rat and guinea pig the mutual inhibition between sugars and a.a. amounted to only 10 to 15% (Munck, 1972(Munck, , 1980Robinson & Alvarado, 1977). The 14% inhibition which lysine caused to the transport of 1 mM galactose in the presence of 90 mM alanine is consistent with these results.…”