The transport of organic solutes (sugars, amino acids, and metabolic intermediates) and inorganic solutes (Na+/H+ exchange and Na+-SO = 4 cotransport) in renal brush border and in intestinal brush border and basal lateral membrane vesicles is preserved when the vesicles are stored in liquid nitrogen. The preservation allows comparisons among transport systems of renal and intestinal cells obtained from the same animal.
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Stevens et al. (1982) studied this question.
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