title: Morphological and cytological features of gene activity in an amphibian hybrid system.
mesh_terms: D000818:Animals; D001001:Anura; D002455:Cell Division; D003593:Cytoplasm; D004171:Diploidy; D004625:Embryo, Nonmammalian / Q000166:cytology; D005260:Female; D005796:Genes; D006824:Hybridization, Genetic; D007621:Karyotyping; D008722:Methods; D053652:Nuclear Transfer Techniques; D010063:Ovum; D011123:Polyploidy; D011894:Rana pipiens / Q000196:embryology; D011898:Ranidae / Q000196:embryology*; D014183:Transplantation, Heterologous