The positive rate of telomerase acti vity was 90.7%in biopsy specimens from 43 cases diagnosed as nasopharyngeal c arcinoma (NPC) and 6.7%in those from 15 cases of chronic nasopharyngitis.是什么意思_The positive rate of telomerase acti vity was 90.7%in biopsy specimens from 43 cases diagnosed as nasopharyngeal c arcinoma (NPC) and 6.7%in those from 15 cases of chronic nasopharyngitis.在线翻译_英语_读音_用法_例句