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Effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), 3,3',4,4',5-pentachlorobiphenyl (PCB 126), or 2,3,3',4,4',5-hexachlorobiphenyl (PCB 156) on thyroid hormone metabolism were studied in 13-week feeding studies in female Sprague-Dawley rats. The diets were supplemented with the compounds tested at concentrations ranging from 0.2 to 20 micrograms/kg diet(More)
Evoked potentials (SEP and BAEP) were measured daily in 18 patients who had suffered severe craniocerebral trauma, but could not be examined neurologically due to a barbiturate coma or neuromuscular blockade. The BAEP had only limited value as an indicator of the prognosis for these patients. The N20 component of the SEP appeared to be more valuable in this(More)
In risk assessment, information from toxicity studies is combined with information on worker exposure. In general, agricultural practice implies long-term intermittent exposure to various pesticides. This issue can only be addressed when sufficient information exist, on exposure regimes. Patterns of application of pesticides and the use frequency of single(More)
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