In the colon, short-chain fatty acids (SCFAs) like butyrate are produced by bacterial fermentation. How are they primarily absorbed?
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Correct answer: Exchange with bicarbonate or via H+-coupled transporters
SCFAs are a vital energy source for colonocytes. They are absorbed via sodium-linked transporters or $H^+$-coupled monocarboxylate transporters (MCTs), often in exchange for bicarbonate.
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