Monoclonal Anti-MAP Kinase 2 (ERK-2) antibody is suitable for detection by immunoblotting, at a working concentration of 0.5 μg/mL, using whole cell lysates of human A431, mouse 3T3 fibroblasts or r at L6 cells. Detection of MAPK2 (ERK-2) was possible in human colon adenocarcinoma cells, HT-29. Immunoprecipitation applications in mouse 3T3 fibroblasts require a concentration of 4 μg. The antibody may be suitable for protein microarray.