As a B cell lymphoma, MCL is characterized by the presence of characteristic B cell expression patterns with high (> 90%) expression of CD5, CD19, CD20, CD21, CD22, CD43, CD79a, sIg, and cIg, and low (< 10%) expression of CD10 and CD23. The gene discussed is CD79A; the disease is B-cell non-Hodgkin lymphoma.