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Department of Pediatrics, New York University College of Medicine and the Children's Medical Service, Bellevue Hospital, New York
On the basis of changes in rate of growth and nitrogen retention induced by the fractionally supplemented control diets following 3 weeks of the isoleucine deficient regimen, it has been estimated that the infant requires approximately 90 mg of L-isoleucine per kilogram per day.
Manuscript received 12 September 1947.