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Response of the tip link to compressive and tensile forces. (A) Freeze-etch images of a smoothly buckled bullfrog tip link. (B and C) Freeze-etch images of a bullfrog tip link apparently under tension; note that lower membrane is cone-shaped, suggesting that tenting is present. (D) Thin-section TEM image of a tip link in a relaxed state. (E) Thin-section TEM image of a tip link in a tensed state. The membrane appears to pull away from the tip density. (Scale bars = 100 nm.)
