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Marker gene expression. B-galactosidase stain with 40× (A) and 100× (B) magnification with (B) showing a higher magnification from the area boxed in (A). The graft wall is marked for clarity in (A). Transduced cells were seen 6 days after surgery and AdLacZ gene transfer (dark brown nuclei indicated with arrows in (B)). Scale bars 200 µm.
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