P. W. C.
Although iron is an element vitally essential to all vertebrates, relatively little has been known regarding its exchange in the body. Iron unquestionably must be absorbed from the gastrointestinal tract, and there is good reason to believe that this occurs largely in the upper part of the small intestine. The details of its excretion are much less clear. Iron is normally present in the urine in only minute insignificant traces, and by exclusion it has been assumed that excretion occurs through the intestine. Some histological evidence has been advanced to support this view, but it is impossible to determine in
C. PW. THE ABSORPTION AND EXCRETION OF IRON. Ann Intern Med. ;14:930–933. doi: 10.7326/0003-4819-14-5-930
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Published: Ann Intern Med. 1940;14(5):930-933.
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