A Simple Double-Surface Dialyzing Membrane

Publisher Website
Google Scholar
Abstract
In 70 mice exposed to simulated altitude of 15,000 ft. for 10-14 hrs. per day until bone marrow samples showed an increase of erythroid elements from the normal 10.6% to 18.6%, and then exposed to 500 r of total body X-radiation, the marrow from femur showed a rapid fall in erythroid elements for the first 2 days, a rise from 4-6th day, followed by a slight fall from 6-9th day. In an equal number of control animals not exposed to anoxia similar changes appeared in the marrow up to the 6th day when a drop in the erythroid elements which was significantly greater than that in the anoxic animals began and continued for the duration of the expt. (9 days). Thus, anoxia-induced hyperplasia of the red marrow increases the resistance of erythroid elements to X-radiation.