title: Letter to the editor: Tetrahymena DNA forms a single band in alkaline density gradients.
mesh_terms: D000818:Animals; D004247:DNA / Q000032:analysis*; D006147:Guanine / Q000032:analysis; D013769:Tetrahymena pyriformis / Q000032:analysis*; D013941:Thymine / Q000032:analysis
chemical_list: D006147:Guanine; D004247:DNA; D013941:Thymine