الفهرس 
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Abstract
Trichloroethylene (TCE) is a widely volatile organic compound, because of its widespread commercial use. So, TCE become a major environmental pollutant. It is the most frequently reported organic contaminant in ground water, so a considerable numbers of people are exposed to TCE via inhalation, through the skin or through drinking water and rarely through food. The main symptoms of exposure are headache, dizziness, and confusion, beyond the effects on the central nervous system, work place exposure to TCE has been associated with toxic effects in many organs including liver, kidney and testes in addition to attenuation to the immune system. The present study aims to investigate the possible modulatory effect of certain micronutrients such as vitamin C and zinc alone and in combination on the damage of liver, kidney and testes of male rats intoxicated with trichloroethylene for 20 and 105 days. The results showed significant decrease in body and testes weight and increase in liver and kidney weights after long period of treatment with TCE. Some of the selected hematological and biochemical parameters of the rats intoxicated by TCE for short and long period significantly changed. The results revealed significant decrease in free tetraiodothyronine (thyroxine) (FT4) and significant increase in free triiodothyronine (FT3) and thyroid stimulating hormone (Thyrotropin) (TSH) in TCE-intoxicated rat groups for the two periods of treatment.