Methods: We studied the bactericidal activity and mechanism of rat platelet and platelet PLA2 in three levels: systemic level, cellular level and molecular level.
从整体、细胞、分子水平对大鼠血小板和血小板型PLA2的杀菌作用及其机制进行研究。
It revealed that lead could restrain NOS at the enzyme activity level, which probably is one of important molecular mechanism of the damage in learning and memory functions.
这一结果表明，铅染毒后对大鼠中枢神经系统中NOS酶活性具有抑制作用，这可能是铅中毒引起学习记忆功能障碍的重要机制之一。
It mainly aims at clarifying the chemical composition in molecular level and the nature of chemical changes and the regulative law in the process of vital activity.
生物化学是研究生命的化学组成及其在生命活动中变化规律的一门学科。
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