title: Ultrastructural changes elicited in the Tetrahymena by primary exposure (imprinting) and reexposure to hormone.
mesh_terms: D000818:Animals; D004105:Diiodotyrosine / Q000494:pharmacology*; D007173:Imprinting, Psychological / Q000187:drug effects*; D008854:Microscopy, Electron; D011956:Receptors, Cell Surface / Q000187:drug effects; D013769:Tetrahymena pyriformis / Q000187:drug effects / Q000648:ultrastructure*; D013997:Time Factors
chemical_list: D011956:Receptors, Cell Surface; D004105:Diiodotyrosine