title: An explanation by the author concerning the papers on the critical role of the nucleolus in cell development.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002466:Cell Nucleolus / Q000502:physiology*; D002875:Chromosomes / Q000502:physiology; D003584:Cytological Techniques; D006801:Humans; D013194:Staining and Labeling