The Epstein Barr virus(EBV) DNA in the gargle of the patients with tumors of head and neck was detected with PCR.

• 用多聚酶链式反应（Polymerasechainreaction，PCR）方法对一组头颈部恶性肿瘤病人口咽部含漱液中的Epstein－Bar病毒（EBV）DNA进行了检测。