The Effect of X-Ray Stimulation on the Bioelectric Potentials of the Avian Egg

Abstract
Approx. 1,200 fresh white leghorn eggs were irradiated in vivo and in vitro at 0.24-0.36 A with 8 to 5,000 r units at approx. 600 r units per min. and the P.D. between blastoderm and albumen measured every 6 hrs. for 24 hrs. Max. stimulation increasing the P.D. up to 250% normal occurred at approx. 250 r units. Larger doses became inhibiting. The range of stimulating doses was far greater for cold eggs than for those preheated 3 hrs. at incubation temp. Normal P.D. between yolk and albumen is very small except for occasional dark spots on yolk where the P.D. is very high.

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