The investigators collected unstimulated saliva from 32 patients with primary T1/T2 oral squamous cell carcinoma (OSCC) and from 32 normal subjects matched for age, gender, and smoking history.

• 研究人员收集32位原发性T1或是T2口腔扁平细胞恶性肿瘤（OSCC）患者、以及32位年龄、性别与吸菸史相符的正常受试者唾液；