The 1988 Olympics in Seoul, South Korea, were marred by disqualifications over performance-enhancing drug use.

奥林匹克运动历史瞬间图片。 1988年奥运会在汉城，南韩，分别受到取消资格的绩效，提高药物使用。

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As Lance begins his final Tour, he faces fresh allegations of performance-enhancing drug use.

FORBES: Last Chance To See Lance

Kelli Smith will miss the Olympics after admitting to using EPO, a performance-enhancing drug.

FORBES: The Athlete's Pharmacopeia

In Armstrong's deposition from the legal case, his sworn statements are consistent with his past denials of performance-enhancing drug use.

NPR: Ex-Friends Say Armstrong Admitted Drug Use