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An ANF I and III (as in Fig. 1) recorded in a single retraction curve from a T. undulatum mucilage pad. The first extension (red) and retraction (blue) cycle represents fly-fishing where an ANF III attaches to the tip and is unfolded, then the second extension (gray) and retraction (black) cycle is repeated and an ANF I attaches to the tip and unfolds as well as the ANF III.
