Additionally, the donor chimerism of old CD150 high HSCs exhibits a clear trend of decline from LT-HSCs through ST-HSCs, MPPs, to PB, while the donor chimerism of old CD150 low HSCs remains relatively stable (Fig. 4e ), supporting a long-term differentiation defect of old CD150 high HSCs.
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Reducing functionally defective old HSCs alleviates aging-related phenotypes in old recipient mice.
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