IUBio

IHC background

paul.fonteneau fonteno at pharma.u-strasbg.fr
Thu Feb 28 03:25:56 EST 2002


"Dr. Douglas Darling" wrote:
> 
> I am using an FITC-conjugated secondary antibody on histological
> sections of mouse embryos.  We get great labeling with our primary
> antiserum.  However, all the blood cells also label.  The blood cells
> fluoresce brightly even when no primary antibody is used.  I use 10%
> serum-0.1% triton to block.  There is obviously some non-specific
> binding of the secondary Ab-FITC to the blood cells.  I tried 4
> different secondary Ab conjugated to either FITC or TRITC.  HOW CAN I
> BLOCK THIS???

Do you use F(ab')2 antibody or whole molecule ?
May be 0.5% BSA would be better as blocking agent ?




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