Western blot testing of human 1) HeLa, 2) COLO-320, 3) SK-O-V3, 4) Jurkat, 5) rat heart and 6) mouse heart lysate with CEP68 antibody at 0.5ug/ml. Predicted molecular weight ~81 kDa (isoform 1), ~67 kDa (isoform 2).