This link can be helpful

https://www.researchgate.net/post/Best_method_for_staining_oligodendrocyte_precursor_cells_with_A2B5

You may be able to use the AS11 monoclonal against aSynuclein or other family antibodies that cross with the mouse (www.dendritics.net)

Thank you Jean-Jaques. I had no idea that oligodendrocyte precursors normally express enough aSynuclein? Do you have a good reference or a good picture?

And thank you Nemanja. I will try the sigma A2B5 from Sigma too.

I would not suggest A2B5 ab, but the post mentions some good alternatives.