Formalin-fixed and paraffin embedded human gastric carcinoma labeled with Anti-MEK1\/2(MAPKK1) Polyclonal Antibody, Unconjugated (bs-1041R) at 1:200 followed by conjugation to the secondary antibody and DAB staining.

Paraformaldehyde-fixed, paraffin embedded human lung carcinoma; Antigen retrieval by boiling in sodium citrate buffer (pH6) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 30 minutes; Blocking buffer (normal goat serum) at 37\u00b0C for 20min; Antibody incubation with Rabbit Anti-MEK1\/2 Polyclonal Antibody, Unconjugated (bs-1041R) at 1:500 overnight at 4\u00b0C, followed by a conjugated secondary and DAB staining.