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Article
February 9, 1907

THE ACTION OF THE X-RAYS ON LEUKEMIC BLOOD.

JAMA. 1907;XLVIII(6):528. doi:10.1001/jama.1907.02520320066012
Abstract

The use of the x-ray in leukemia was at first practiced on purely empirical grounds, as the method of action of the rays was little understood. Later, experimental and clinical work showed that the x-rays had a destructive power of a selective character, picking out certain varieties of cells and causing their solution. Now, Capps and Smith1 have shown that the serum of a leukemic patient in whom such cell destruction has taken place, develops lytic power, also of a selective character, and that both within and outside of the body it is capable of causing solution of certain varieties of leucocytes. Not all leukemic patients develop this power in their serum, for not all of them improve under the x-ray, and the lytic properties seem to be proportional to their improvement. These observations are interesting and suggestive, and may pave the way for improvements in the x-ray treatment of

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