CD79A and colorectal carcinoma: T test analysis showed that the mean anti-ETBF IgG and IgA levels of CRC cases with well-differentiated tumors were not significantly different from the mean antibody levels of the cases with moderately and poorly differentiated tumors (IgG: 0.2932 ± 0.1191 vs. 0.2671 ± 0.1200, P = 0.571; IgA: 0.6238 ± 0.1907 vs. 0.7448 ± 0.1938, P = 0.109).