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. 2011 Apr 4;108(18):7290–7295. doi: 10.1073/pnas.1016687108

Fig. 2.

Fig. 2.

(A) Image of Paramecium after trichocyst ejection events in four different experiments. The laser position is marked with a star on each image. The trichocysts are visible as directed straight lines between the cell and the laser position. Note that the number of trichocysts varies depending on the experiment, increasing for higher heating. (B) Sideways escape of a wild-type cell from a lateral aggression. (C) Nondischarge mutant that cannot liberate the trichocysts must swim along its major axis to escape a similar heating. See also accompanying Movies S3 and S4. (D) Plot of the minimum distance between the cell and the laser for the experiments shown in B and C.