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Relationships between disaccharide hydrolysis and sugar transport in amphibian small intestine

1. A study is described of the relationships which exist between disaccharide hydrolysis and glucose transport in the small intestine of Rana pipiens and Bufo vulgaris. The experiments were undertaken on the intestine perfused in vitro through the vascular system and with fluid circulating through the intestinal lumen. For this system it was found that, with [U‐14C]glucose in the intestinal lumen, the apparent specific activity of the glucose appearing in the vascular effluent was not significantly different from that in the lumen.