I have fixed rat brain sections, 40um thick, cut on cryostat. The anti myelin antibody, MAB386 gives me non-specific staining in free floating but works beautifully on paraffin sections. Any suggestions?
The antibody concentration could be the raeson for unspecific staining. Try to do several differnt delutions of the MBP-ab to find out which is the optimalone for your protocol. If this does not help. I recommand the mouse monoclonal ab MB 382. This ab should work on paraffin sections as well as on free floating frozen sections.