Fig. 1.

High-speed analysis of haptonematal coiling and uncoiling. (A) Coiling process of a haptonema. High speed images recorded at 1000 fps. Gentle helices that initially formed in the distal half of a haptonema are indicated by white arrowheads. Stacked coils are indicated by black arrowheads. Scale bar: 20 µm. (B) Uncoiling process of a haptonema. High speed images recorded at 200 fps. Scale bar: 20 µm. The inset represents the trace of the haptonema at 70 ms for clarification of the coiling direction.