title: The nucleolar chromosome in embryos of Rana pipiens.
mesh_terms: D000818:Animals; D001001:Anura; D001854:Bone Marrow Cells; D002455:Cell Division; D002466:Cell Nucleolus / Q000648:ultrastructure*; D002875:Chromosomes; D004625:Embryo, Nonmammalian; D005260:Female; D007621:Karyotyping; D011894:Rana pipiens