Date

May 1922

Document Type

Thesis

Degree Name

M.S.

Department

Dept. of Physiology

Institution

University of Oregon

Abstract

In some early work in which we were using a Vitamin A deficient diet, we experienced considerable difficulty which we attributed to variations in the Vitamin A factor in our basal diet. The results that we obtained were rather unsatisfactory in the following respects: 1. No specific opthalmia occurred. 2. Cessation of growth was in all cases obtained but loss in weight followed in only a few instances. 3. I was necessary to run the experiment for a much longer period of time than would have been necessary with a more highly purified diet. 4. Death due to the deficiency was greatly delayed. Because of these objections we felt that there was ample reason to believe that Vitamin A was present in amounts sufficient to prevent the classical signs of a Vitamin A deficiency and that it had gained access through some ingredient or ingredients of the diet which we had been led to believe was practically devoid of this factor.

Identifier

doi:10.6083/M4VH5KS0

School

School of Medicine

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