Abstract
Summary
Fenestrated eggs of 12-day chick embryos were given 800 r of 250 kvp X-rays. Injury to blood vessels of the extraembryonic membranes was detectable within minutes following irradiation. Deterioration was most rapid and extensive in the capillaries and least marked in the major blood vessels. Vascular disruption preceded the appearance of extravasated blood in that region. Intraembryonic hemorrhage was also noted. Following irradiation the mortality was 62% at 21 hours and 100% by 48 hours.
Get full access to this article
View all access options for this article.