抄録
The author observed whether the lack of the Vitamin A may cause or not the avitamirosis in the rat leprosy, as in the human leprosy. The result is as follows:
1) The naturally infected rat leprosy and the artificially infected one which is fed by the natural nutriment are not sensitive to the lack of the Vitamin A as compared with the human leprosy.
2) The artificially infected rat leprosy which is fed by the nutriment has no Vitamin A is more sensitive to the lack of the Vitamin A than the normal rat which is fed by the same nutriment.
