Immunoblotting (Western blot) of supernatants from cells cultured in AIM-V medium for 40 hours. Culture medium alone (lane 1), fibromodulin-positive (PCR) cell line (HFFF-PI 6) (lane 2), PBMCs of healthy donor (lane 3), B-CLL cells (lane 4), T cells of healthy donor (lane 5), and B cells of a healthy donor (lane 6). Molecular weight marker is to the left.