Detection of caspase-10, MMP-9 and total LM by ELISA in tumor tissues and adjacent non-malignant tissues of patients with clear cell renal cell carcinoma. (A) Caspase-10 ELISA; (B) MMP-9 ELISA; and (C) total LM ELISA. Tumor, tumor tissues; normal, adjacent non-malignant tissues. *P<0.05, **P<0.01. MMP, matrix metalloproteinase; LM, laminin.