Figure 8.

Human β2-microglobulin– and pancytokeratin-positive cells are mostly detected in NOD-SCID mice alveolar walls after systemic administration of cord blood mesenchymal stem cells (CB-MSCs). (A–C) NOD-SCID lung sections 2 weeks, 1 month, and 3 months after CB-MSC administration, respectively. Blue = DAPI (4′-6-diamidino-2-phenylindole) nuclear stain, green = pancytokeratin, red = β2-microglobulin, white = colocalization of pancytokeratin and β2-microglobulin. Original magnification, ×200. Representative photomicrographs from one of four mice per experimental condition.