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Lum were also excised and used for the determination of monoamines only. Due to the limitation of the tissues, six samples only were analyzed for each parameter. The analysis of each individual sample was repeated three times and the average was recorded.A- Aggressive behaviour evaluations The animals were housed in pairs with like-sexed littermates with whom they had lived continuously. The follo
1
As estimated using Ellman procedure [30] as modified by Gorun et al. [31] for the assay of purified preparations of cholinesterases. This procedure isThe LC 50 (30 minutes) for leaded (G1) was found to be 37475 ppm and for unleaded (G2) 39928 ppm. The rats of each group were subjected to aggressive behaviour tests for ten days, through the last ten days of exposure. After the completion of this te
1
Er, a barometer, thermometer and hygrometer were installed in order to continuously register the pressure, temperature and humidity, respectively. The animals were kept in an inhalation chamber and the gasoline was evaporated in a vaporizer and the vapours passed through a rubber tube to the inhalation chamber. By calculating the amount of gasoline vapours was determined as part per million (ppm)
1
As estimated using Ellman procedure [30] as modified by Gorun et al. [31] for the assay of purified preparations of cholinesterases. This procedure isThe LC 50 (30 minutes) for leaded (G1) was found to be 37475 ppm and for unleaded (G2) 39928 ppm. The rats of each group were subjected to aggressive behaviour tests for ten days, through the last ten days of exposure. After the completion of this te
1
Er, a barometer, thermometer and hygrometer were installed in order to continuously register the pressure, temperature and humidity, respectively. The animals were kept in an inhalation chamber and the gasoline was evaporated in a vaporizer and the vapours passed through a rubber tube to the inhalation chamber. By calculating the amount of gasoline vapours was determined as part per million (ppm)
1
Idly adducting his extended fore limbs and he also bites the ear or limb or the tail. Boxing position: longer intervals in which both rats adopt a defensive attitude.B- Physiological and biochemical measurements Determination of superoxide dismutase (SOD) activity Superoxide dismutase (SOD) activity was assayed by the procedure of Niskikimi et al. [26]. The assay relies on the ability of the enzy
1
Er, a barometer, thermometer and hygrometer were installed in order to continuously register the pressure, temperature and humidity, respectively. The animals were kept in an inhalation chamber and the gasoline was evaporated in a vaporizer and the vapours passed through a rubber tube to the inhalation chamber. By calculating the amount of gasoline vapours was determined as part per million (ppm)
1
Immediately extracted from the trace elements and lipids by the use of solid phase extraction CHROMABOND column NH2 phase Cat. No. 730031. The sample was then injected directly into an AQUA column 150 54.6 mm 5 C18, purchased from Phenomenex, USA under the following conditions: mobile phase 97/3 20 Mm potassium phosphate, pH 3.0/ methanol, flow rate 1.5 ml/min, UV 270 nm. norepinephrine, dopamine

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