title: Fine structure studies on the planarian, Dugesia. I. Nature of the "neoblast" and other cell types in noninjured worms.
mesh_terms: D000818:Animals; D002452:Cell Count; D002454:Cell Differentiation; D008854:Microscopy, Electron; D008938:Mitosis; D009132:Muscles / Q000166:cytology / Q000648:ultrastructure; D010932:Planarians / Q000166:cytology / Q000648:ultrastructure*; D012867:Skin / Q000648:ultrastructure; D014419:Turbellaria / Q000648:ultrastructure*