目的：探讨白血病耐药细胞的发生机制与细胞内钙离子浓度的关系。
Purpose: to study the mechanism of the Multi drug resistant cells and the relationship to the calcium cation level in cells.
对于细胞内钙离子浓度的调节是许多生物体系所采用的最一般的信号机制。
The modulation of intracellular Ca2+ concentration is a common signaling mechanism used in many biological systems.
结论茶儿茶素可能通过降低脑细胞内钙离子浓度，保护脑组织对抗缺血再灌注损伤。
CONCLUSION It indicated that tea catechins had protective effects on the injury of cerebral ischemia and reperfusion in rats, and these effects may be related to calcium concentrations in brain.
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