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Cilia are intracellularly coupled by BBs. (A) Immunofluorescent image depicting a Tetrahymena cell. Bottom panel: Inset (white box) illustrating top-down views of the BB network. Microtubule (MT), red; SF, green. Scale bar, 10 µm. Inset width, 11.0 µm. (B) FIB-SEM (two-dimensional projection) and model images showing the intracellularly coupled ciliary array of a Tetrahymena cell. Cilia, cyan; cortex, yellow; BB, red; SF, green; Postciliary microtubule (pcMT), white. Scale bars, 1 µm.
