Vector Laboratories’ Mouse on Mouse detection kits (M.O.M.®) are designed for the detection of mouse IgG primary antibodies on mouse tissue sections. For detecting mouse primary antibodies on rat tissue, we offer a selection of anti-mouse, rat adsorbed secondary detection reagents. These are intended to be used for this application and would generate the most optimal signal to noise staining ratio. We offer a biotinylated anti-mouse IgG, rat adsorbed secondary antibody (Cat. No. BA-2001) for use with VECTASTAIN® ABC kits or avidin and streptavidin enzyme conjugates. Alternatively, we offer an ImmPRESS® HRP polymer anti-mouse IgG, rat adsorbed detection kit (Cat. No. MP-7422) for a convenient, one-step IHC methodology.