自盛大要约收购新浪股票，新浪设置“毒丸”作为反收购措施后，“毒丸”开始为国内人们所熟悉，但是在我国较少有对“毒丸”的系统研究。

Poison pill is known by the public after Sina set up poison pill as defense tactic against Shengda purchasing its stocks by tender offer, but in home there is no systematic study on poison pill.

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当80年代恶意收购浪潮席卷美国时，胆战心惊的上市公司经理和董事会引入了“毒丸”等反收购新手段，以击退恶意收购者。

As hostile takeovers swept the US in the 1980s, scared managers and boards of public companies introduced new techniques, such as the "poison pill", to fight off hostile bidders.

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