title: The ultrastructure of the cortical cytoplasm in the unfertilized egg and first cleavage zygote of Xenopus laevis.
mesh_terms: D000818:Animals; D002498:Centrifugation; D002970:Cleavage Stage, Ovum / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D010063:Ovum / Q000648:ultrastructure*; D014982:Xenopus laevis / Q000196:embryology*