title: The G-S-T theory of cellular differentiation.
mesh_terms: D000818:Animals; D001001:Anura; D002454:Cell Differentiation; D002875:Chromosomes / Q000502:physiology*; D005314:Embryonic and Fetal Development; D005796:Genes; D008954:Models, Biological; D013997:Time Factors; D014161:Transduction, Genetic