title: Duration of karyomitosis and cell division in cleavage divisions II-IV in the clawed frog, Xenopus laevis.
mesh_terms: D000818:Animals; D001001:Anura; D002455:Cell Division; D005260:Female; D008938:Mitosis; D010063:Ovum / Q000254:growth & development*; D013997:Time Factors; D014981:Xenopus / Q000196:embryology*