Figure 2

Immunofluorescence staining of the human MOR . Immunofluorescence staining was used to visualize the basal expression level of the human MOR. (A) U87 MG cells stained with goat anti-rabbit IgG (1:1,000) alone (negative control); (B) U87 MG cells stained with 4'-6-diamidino-2-phenylindole (DAPI) (1:1,000); (C and E) U87 MG cells stained with rabbit anti-MOR (1:1,000); (D) A superimposed image of B and C to show location of the MOR.