Figure 2: LPS-induced IFN-γ production in PBC from OSCC patients; OSCCs were divided by clinical stages (A), T grades (tumor sizes) (B) or lymphnode status (C). Peripheral blood samples from OSCC patients were stimulated for 24h. Induced IFN-γ was detected by ELISA. The amount of IFN-γ (ng/ml) is in vertical axis. Stages (I, II, III, IV), T grades (1, <2 cm; 2, 2-4 cm; 3, 4-6 cm; 4, 6 cm<), lymphnode status (N0, no regional lymph node metastasis; N1, metastasis in a single ipsilateral lymph node, 3 cm or less in greatest dimension; N2, metastasis in a single ipsilateral lymph node 3 cm ~ 6 cm in dimension) and patient numbers are in abscissa axis, respectively. Evaluation of T grades was performed using blood samples of OSCC patients harboring no metastasis. Evaluation of limphnode status was performed using blood samples of OSCC patients classified as stages III and IV.