Occurrence of steroid sex hormones in the Cache la Poudre River : and pathways for the removal in the environment
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Some chemicals have the apparent ability to disrupt normal endocrine system functions after exposure to concentrations so small that they are difficult to detect in the environment. In recent years, these so-called "endocrine disruptors" have become the subject of intensive scientific research. In wildlife, most of the evidence for endocrine disruption has come from studies on species living in, or closely associated with, aquatic environments. Reported effects of endocrine disruption include abnormal blood hormone levels, masculinization of females, feminization of males, altered sex ratios, ...