title: Cytological studies on the organization of DNA in giant trophoblast nuclei of the mouse and the rat.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure*; D002843:Chromatin / Q000032:analysis; D002875:Chromosomes / Q000648:ultrastructure; D004247:DNA / Q000032:analysis*; D003720:Densitometry; D005260:Female; D006238:Haploidy; D006570:Heterochromatin / Q000032:analysis; D051379:Mice / Q000196:embryology*; D008854:Microscopy, Electron; D011247:Pregnancy; D051381:Rats / Q000196:embryology*; D012728:Sex Chromatin / Q000032:analysis; D013194:Staining and Labeling; D014327:Trophoblasts / Q000648:ultrastructure*
chemical_list: D002843:Chromatin; D006570:Heterochromatin; D004247:DNA