title: [Histoautoradiography of the DNA in trophoblast giant cells of the mouse placenta. A contribution to the problem of metabolic DNA].
abstract: The trophoblast giant cells of the mouse placenta are mitotically inactive. Nucleolar RNA synthesis is apparently at a standstill. The high nuclear DNA contents of these cells shown by 3H-thymidine marking is conceived by us to be a synthesis of metabolic nuclear DNA. Thus protein synthesis in trophoblast giant cells has been taken over by a metabolic DNA.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002467:Cell Nucleus / Q000648:ultrastructure; D004247:DNA / Q000032:analysis / Q000378:metabolism*; D005260:Female; D005865:Gestational Age; D051379:Mice; D011247:Pregnancy; D014176:Protein Biosynthesis; D012313:RNA / Q000032:analysis / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014327:Trophoblasts / Q000378:metabolism* / Q000648:ultrastructure
chemical_list: D012313:RNA; D004247:DNA; D013936:Thymidine
vernacular_title: Histoautoradiographie der DNS in Trophoblastriesenzellen der Plazenta der Maus. Beitrag zum Problem der metabolischen DNS