I am trying to stain T cells in the mouse cornea. I have used OCT embedded tissue. I tried with or without permeabilization but no luck. Ly6G staining works fine. So it seems its CD3 staining is the issue. Both Ly6G and CD3 antibody works fine in Spleen but not in the eye. I know there are CD3 cells from my flow result but can't show it in microscopy. CD3 clone 145-2C11.