title: The pre-pairing events in Tetrahymena thermophila. Analysis of blocks imposed by high concentrations of Tris-Cl.
mesh_terms: D000818:Animals; D003227:Conjugation, Genetic / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005796:Genes; D009154:Mutation; D013768:Tetrahymena / Q000187:drug effects / Q000502:physiology*; D013997:Time Factors; D014325:Tromethamine / Q000494:pharmacology*
chemical_list: D014325:Tromethamine