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Cytokeratin 19 immunofluorescent staining of the graft site. A: CK19 staining of a 3-mo survivor in the T-tube group; B: CK19 staining of a 3-mo survivor in the stent group; C: CK19 staining of an animal who died at 1 mo in the stentless group. Scale bar indicates 20 μm. CK19: Cytokeratin 19.
