Figure 4. IHC staining of GJA1, GJA8, GJB6, and GJC1 proteins in human TM cells from three donors. In the trabecular meshwork (TM) cells from three individuals, expression of the GJA1 and GJA8 proteins was stained in red, and the GJB6 and GJC1 proteins were stained in green on the membrane between adjacent cells. Cell nuclei were labeled with 4′,6-diamidino-2-phenylindole (DAPI; blue). Bar = 50 µm.