CD9 and colorectal carcinoma: Their measurements in the EVs isolated from the plasma of patients with patients CRC gave comparable data: 0.58 ± 0.45 fmol/μg for HSPA8, 0.24 ± 0.12 fmol/μg for CD9, and 0.15 ± 0.02 fmol/μg for CD63, respectively.