Extract of the heartwood of acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally.
用儿茶树的心材提取，用于印染、制革、渔网和帆蓬保养，以前用于医药。
Methods The inhibitory cytopathic effects (CPE) of catechu extract on influenza A virus were observed by MDCK cell culture techniques.
方法用狗肾传代MDCK细胞培养法观察儿茶提取物抑制甲型流感病毒的致细胞病变作用；
AIM: To study the quality standard on catechu and its extract.
目的：研究儿茶及儿茶提取物的质量标准。
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