The differential action of X-rays on tissue growth and vitality.―Part I
- 1 November 1929
- journal article
- research article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character
- Vol. 105 (738) , 402-421
- https://doi.org/10.1098/rspb.1929.0051
Abstract
The chorio-allantoic membrane of the embryo chick was exposed to homogeneous Roentgen radiation of various wave lengths (0.3-2A.) obtained by the method of crystal diffraction. It was found that The biological reaction shows an alternation in degree through a series of different wave lengths. The nature of the response is in part a function of wave length, so that some wave lengths cause destruction and others, specific stimulation. An inadequate dose of destructive radiation causes stimulation. Different types of tissue such as epithelia appear to be selectively stimulated by certain wave lengths. The various components of mixed radiation neutralize one another in their biological action so that the threshold dose for mixed radiation is much greater than that for suitable homogeneous radiation. This phenomenon was termed antagonism. Various biological and pathological changes, such as proliferation and death, may be associated with certain definite chemical atoms.This publication has 0 references indexed in Scilit: