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Histopathological view of samples demonstrating how antibodies dye intensities were assessed (stain, DAB; +1, magnification, 40; +2, magnification, ×20; +3, magnification, ×10). Shh, Sonic hedgehog protein; Gli-1, Glioma-associated oncogene-1 protein: Ptch-1, Patched-1 protein.
