[Histonet] Can DAB block an epitope??

[GT Hebert]

Hello all,
 
I was hoping to run a chromogenic immuno to check if two proteins colocalize.  
 
Since both antibodies are made in rabbit, I was going to stain one and visualize with DAB and then heat retrieve (pressure or steam) to drop off the first antibody and restain with my second rabbit antibody using a different color to visualize.
 
How likely, if at all will the DAB precipitate block / mask the epitope of my second antibody if indeed they are in a similar location?
 
Any info would be greatly appreciated.
 
Thank you!
 
Regards.
 
Gustave
 
Gustave T. Hebert
Research Scientist I
Metabolic Disease Research
Wyeth Research
200 CambridgePark Drive
Cambridge, MA 02140