Puchkov V F
Arkh Anat Gistol Embriol. 1976 Oct;71(10):34-41.
Two critical periods have been established in the development of spurs representing a derivative of the corneous squama. During the first period the exposure to x-rays results in the development of the corneous squama instead of the spur, and the same exposure during the second critical period completely suppresses the development of the spur. These periods seem to correspond to the truning-points in the chain of morphogenetical processes of the spur formation associated with phylembryogeneses. Department of Embryology, Institute of Experimental Medicine, USSR Acad. Med. Sci., Leningrad.
已经确定在代表角质鳞片衍生物的距的发育过程中有两个关键时期。在第一个时期，暴露于X射线下会导致角质鳞片而非距的发育，而在第二个关键时期相同的暴露则会完全抑制距的发育。这些时期似乎与距形成的形态发生过程链中与系统胚胎发生相关的转折点相对应。苏联医学科学院实验医学研究所胚胎学系，列宁格勒。
