{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T22:18:44Z","timestamp":1789683524753,"version":"4.0.1"},"reference-count":20,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2007,3,9]],"date-time":"2007-03-09T00:00:00Z","timestamp":1173398400000},"content-version":"unspecified","delay-in-days":6886,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br J Nutr"],"published-print":{"date-parts":[[1988,5]]},"abstract":"<jats:p>1. Riboflavin may play a part in the transport of iron across the gastrointestinal mucosa. Fe absorption was measured in the rat by monitoring whole-body retention of a dose of <jats:sup>59<\/jats:sup>Fe using a small-animal \u03b3-counter.<\/jats:p><jats:p>2. Female Norwegian Hooded rats were fed on a diet deficient in riboflavin (B<jats:sub>2<\/jats:sub>\u2212) from 5 weeks of age. Control animals, fed on a complete diet (B<jats:sub>2<\/jats:sub>+), were weight-matched to rats fed on the B<jats:sub>2<\/jats:sub>\u2212 diet. After 7 weeks all rats were fed on a test meal extrinsically labelled with <jats:sup>59<\/jats:sup>Fe and whole-body radioactivity measured for 15 d.<\/jats:p><jats:p>3. Riboflavin deficiency was associated with a reduction in the percentage of the dose absorbed and an increase in the rate of loss of Fe post absorption.<\/jats:p><jats:p>4. 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