I'm performing IHC on mouse tissue. My primary antibodies are rat anti-mouse antibody. I would like to know which is the best secondary anti-rat HRP conjugated DAB detection system ki. There are kits from BioVison, Invitrogen, Life Technologies, GBI Laboratory. Or should I try buying anti- rat hrp separately and use the detection kit provided for anti-mouse/rabbit by BioGenex, Leica Biosystems etc.?