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Enhanced expression of the adhesion receptors VCAM-1 and ICAM-1 on endothelial cells exposed to sera from patients developing acute graft versus host disease (GvHD). Micrographs of VCAM-1 and ICAM-1 staining (with red and green colors, respectively) on cell surfaces of microvascular endothelial cells exposed to sera from both GvHD and No-GvHD patients at day 21 after allo-HCT. Original magnification of × 400 for all micrographs obtained with a fluorescent microscope (LEICA DM4000B).
