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Morphology of J2 larvae, scanning electron microscope observations. Control animals had a typical, round shape and were covered by regular annuli, separated by furrows (a, b). Nematodes exposed to acetic acid (c), 2-undecanone (d), (E)-2-decenal (e) and fosthiazate (f) showed irregular appearance of the cuticle, they were shrunken, wrinkled, and corrugated, with significantly lower turgidity and sunken structures along the body.
