Food iron absorption measured by an extrinsic tag.

  title={Food iron absorption measured by an extrinsic tag.},
  author={James D. Cook and Miguel Layrisse and C Mart{\'i}nez-Torres and Ron Walker and Elaine R. Monsen and Clement A. Finch},
  journal={The Journal of clinical investigation},
  volume={51 4},
The paper describes the use of an extrinsic tag of inorganic radioiron to determine the total absorption of nonheme iron from a complete meal. The method was developed by measuring the iron absorbed from vegetable foods containing biosynthetically incorporated (55)Fe (intrinsic tag) and from (59)Fe added as a small dose of inorganic iron to the same meal (extrinsic tag). In studies with maize, black bean, and wheat, a consistent extrinsic: intrinsic radioiron absorption ratio averaging 1.10 was… CONTINUE READING

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