Kanwal K. Gambhir ¹, G. S. Ranhotra ², D. S. Wagle ³

Affiliations
1 Department of Obstetrics-Gynecology and Medicine, Howard University, D. C. 20001, US
2 Department of Biochemistry, Punjab Agricultural University, IN
3 Department of Biochemistry, Haryana Agricultural University, Hissar, IN

Abstract

Johnson and Baumann' in 1947 showed that the thyroid status of an experimental animal had a direct bearing on the conversion of carotene to vitamin A. Since that time, however, conflicting reports have rendered this area less well characterized than previously believed.

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