Relationship between the amount of the 'germinal plasm' and the number of primordial germ cells in Xenopus laevis.
D000818:Animals; D002452:Cell Count; D002498:Centrifugation; D003593:Cytoplasm / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D005260:Female; D005835:Genitalia / Q000166:cytology; D005854:Germ Cells / Q000528:radiation effects*; D007814:Larva / Q000254:growth & development; D008643:Mesentery / Q000166:cytology; D010063:Ovum / Q000254:growth & development / Q000528:radiation effects*; D011830:Radiation Effects; D014466:Ultraviolet Rays; D014981:Xenopus