Key points from article :
Human blood cells have a biological clock that could control human ageing.
Measured cellular age in blood cells transplanted from healthy donors to leukaemia patients.
Cells retained their intrinsic age nearly two decades after transplantation.
DNA methylation age of transplanted blood reflected the age of the donor, after so many years.
Ageing clock of blood cells is cell-intrinsic, and not set by interactions with other cell types.
Next step is to identify mechanisms that can change this ageing clock.
Research by Case Western Reserve University School of Medicine, published in Aging Cell.
