title: Conjugation in Tetrahymena: formation of a special junction area for conjugation during the co-stimulation period.
mesh_terms: D000818:Animals; D002449:Cell Aggregation; D002454:Cell Differentiation; D002462:Cell Membrane / Q000648:ultrastructure; D008561:Membrane Fusion; D012098:Reproduction; D013768:Tetrahymena / Q000502:physiology*