The lethal effects of x-rays on the chick embryo: the mode and time of death and their bearing on the determination of LD50.
D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D007928:Lethal Dose 50; D011829:Radiation Dosage; D014965:X-Rays / Q000008:administration & dosage
EMBRYO; ROENTGEN RAYS/dosage