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We evaluated toxaphene-induced acute toxicity in Hydra magnipapillata. The median lethal concentrations of the animals (LC 50 ) were determined to be 34.5mg/L, 25.0mg/L and 12.0mg/L after exposure to toxaphene for 24h, 48h and 72h, respectively. Morphological responses of hydra polyps to a range of toxaphene concentrations suggested that toxaphene negatively affects the nervous system of H...
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