Comparison of lethality and growth in nematodes exposed to different concentrations of clenbuterol or ractopamine.

<p>Exposures were performed from the young adult for 24-hr (acute exposure) or from L1-larvae to adult (prolonged exposure). Fifty nematodes were examined per treatment for lethality assay, and twenty nematodes were examined per treatment for growth assay. Bars represent mean ± S.E.M. **<i>P</i><0.01.