Statistically significant molecular and immunohistochemical parameters.

Clinical samples from primary oral squamous cell carcinoma were classified into cisplatin-resistant and cisplatin-sensitive groups on the basis of MTS assays as described in Materials and Methods.aMann–Whitney U test was used to compare the differences in TCRP1 and MT1X with varying degrees of IHC Scores (−, +, ++, +++) between the resistant and sensitive groups. P-values for statistical significance are indicated.bSpearman’s correlation coefficient was used to analyze whether the relationships between expression of TCRP1 and MT1X in primary tumors correlate with their drug resistance patterns. P