title: Two-step growth curve from undisturbed cultures of Tetrahymena pyriformis.
mesh_terms: D000818:Animals; D002452:Cell Count; D002455:Cell Division; D003470:Culture Media; D006863:Hydrogen-Ion Concentration; D008433:Mathematics; D013769:Tetrahymena pyriformis / Q000254:growth & development*
chemical_list: D003470:Culture Media