Comparative morphological studies of head development after decapitation and after fission in the planarian Dugesia dorotocephala.
D000818:Animals; D005724:Ganglia / Q000502:physiology; D006257:Head / Q000502:physiology; D010932:Planarians / Q000254:growth & development / Q000502:physiology*; D012038:Regeneration; D014419:Turbellaria / Q000502:physiology*