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Body curls in actively moving C. elegans upon exposure to anthelmintics. (a) Snapshots of a representative worm (every 500 ms) as it curls its body such that the head touches or overlaps its tail. (b) Frequency of body curls (i.e., the number of curls divided by the total time a worm stays active) is plotted for the four drugs and control conditions (i.e., in 0.8% agarose gel and DMSO).
