this method is cheap but far long to be perfect. In effect you will get a lot of contamination by T cells. Beads against cd14 is for sure the best way to go.
in alternative you can let the cell adhere for 1 hour only, keep the plate in ace for 15 min (the t will detach faster) wash very well with cold pbs, and just after try to scrap your monocites. But like i said it s difficult you will get great results.
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