Explant of the first four micromeres of Bufo arenarum eggs.
D000818:Animals; D002022:Bufo arenarum / Q000196:embryology*; D002455:Cell Division; D002467:Cell Nucleus; D046508:Culture Techniques; D005260:Female; D005306:Fertilization; D010063:Ovum / Q000166:cytology* / Q000254:growth & development; D010858:Pigmentation; D013997:Time Factors