نتایج جستجو برای: hyperplasia of melano
تعداد نتایج: 21167419 فیلتر نتایج به سال:
The invitro effect of Methyl tert-butyl ether on liver, gill and kidney tissues of Rutillus caspicus
This study was conducted to evaluate the tissue of liver, gills and kidney Rutillus caspicus exposed to concentrations of 50, 100, 150 mg of Methyl tert-butyl ether, for 7, 14, 21 days. Average water temperature of 19±1 °C, water oxygen of 7.6 ± 0.2 mg/l and zero salinity were measured. A total of 156 fishes were studied in this experiment. In the first, second and third week of the test, three...
lead is one of the heavy metal that is very toxic for environment and organisms. lead can inhibits many physiological processes and it is so dangerous for body tissues. in this study, four groups of fish (carassius auratus) 35 in each, were used for experiment. group 1 was as control, in group 2 fishes were exposed to lead acetate at concentration of 8. 5 mg/l, fishes in group 3 and 4 were also...
Background and purpose: Simultaneous exposure of nanoparticles can cause serious damage to aquatic organisms including fish. The aim of this study was to investigate the toxicity effect of subchronic exposure of copper oxide nanoparticles (CuO NPs) in presence of titanium dioxide nanoparticles (TiO2 NPs) on the histopathology of gill and kidney tissues of fish model in vivo exposure. ...
Urethan was administered to newborn Syrian white hamsters to disclose their neoplastic competence. The first treatment was given within 24 hr of birth, and four subse quent injections were given at 3-day intervals. The survivors were sacrificed at 120 weeks of age. The urethan-treated animals developed malignant melano mas which metastasized to regional lymph nodes, lungs, kidneys, and liver. N...
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