. Röntgen ray diagnosis and therapy . 246 THE ROXTGEN RAYS long as in the embry-onic stage, regenera-tion of large portionsof the head and trunkare possible, it shouldbe expected that thenew-born child—in asmaller proportion ofcourse — also offersmore chances for re-generation than theadult. If the germi-nal layer is only pres-ent, further develop-ment of the tissuescan be looked for. Ifa part of a phalanx is properly severed, its individualization is a. Fig. 176.—Congenital Absence of Nasal Bones.


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