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May 1963

Intestinal Absorption

Arch Intern Med. 1963;111(5):676-677. doi:10.1001/archinte.1963.03620290142025

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This crisp, lucid account of intestinal absorption merits a wide audience. It can be read with profit by medical students, their faculty, and the practitioner. The entire field of intestinal absorption is viewed in perspective. The anatomical and physiological bases for absorption, methods for studying absorption, and absorption mechanisms are concisely presented. Absorption of sugars, amino acids, water and electrolytes, triglycerides, cholesterol, bile salts, phospholipids, nucleic acid derivatives, proteins, vitamins, and drugs is discussed eclectically. The didactic force of the many fine illustrations is noteworthy.

The few errors are mainly typographical and can be corrected in subsequent editions. Figure 27, the structural formula of phenol red, affronts the eye of the chemist. The central carbon atom of the triphenylmethyl radical is shown as trivalent. Since the purported structure is that of phenol red at pH 7, the singly negative ion (sulfonate) having the quinoid structure of one phenolic ring should

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