Rat endothelial cell marker

[Amita]

I would appreciate your opinion on selection of
antibody for rat endothelial cell immunohistochemistry staining.
I wish to perform  IHC on paraffin section of  kidney of  SD rats
(ischemia reperfusion of renal artery model).I am confused with selection for  CD-31 or RECA-1, which will give me the better result to visualize the mature or damaged endothelial cells.

I have sort listed the santacruz sc-1506 Ab (CD-31) or abcam (RECA-1), but
not sure about its result on paraffin section. Which antibody should i select or do you suggest me to use other antibody? Your view will be greatly appreciated.
Amita

[excalibur]

CD31 works best on tissue fixed in a zinc formalin, but it can be done on formalin fixed paraffin embedded tissues with the use of citrate buffer antigen retrieval.