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The Antihæmorrhagic Vitamin of the Chick.: Occurrence And Chemical Nature


IN earlier papers1,2 a new deficiency disease in chicks has been described which is characterised by a tendency to large hæmorrhages. It has been ascribed to the lack of a specific antihæmorrhagic factor which is different from vitamin C. More recent work has demonstrated that the factor in question is a fat-soluble vitamin occurring in hog liver fat, in hemp seed and certain vegetables, such as tomatoes and kale, and—to a less degree—in many cereals. Beef muscle, calf brain and beef lungs desiccated at low temperature are ineffective when they form 20 per cent of the diet, but 20 per cent of dried hog liver will prevent the disease.

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  1. Dam, NATURE, 133, 909; 1934.

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  2. Dam and Schönheyder, Biochem. J., 28, 1355; 1934.

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DAM, H. The Antihæmorrhagic Vitamin of the Chick.: Occurrence And Chemical Nature. Nature 135, 652–653 (1935).

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