Fig 6

High levels of CHI3L1 protein in the sera of patients with cancer. a Detection of CHI3L1 protein in sera. The CHI3L1 protein in the sera of healthy donors and metastatic gastric or breast cancer patients (n = 5/group) was immunoprecipitated using anti-CHI3L1. Then, the immunoprecipitated proteins were subjected to western blot analysis using anti-CHI3L1. b CHI3L1 expression levels in gastric cancer tissues. CHI3L1 expression levels in the normal and cancerous tissues of the same patients were analyzed using both the Oncomine and the Gene Expression Omnibus (GEO) databases. c CHI3L1 expression levels in the normal and cancerous tissues of patients with breast cancer were also evaluated using the Oncomine and GEO databases