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Human blood retains DNA-marking patterns formed before birth
Each blood cell carried about 300,000 acquired DNA-marking changes before birth, including more than 3,000 in large segments that remained stable for decades.Each blood cell carried about 300,000 acquired DNA-marking changes before birth, including more than 3,000 in large segments that remained stable for decades.

Preprint: cross-sectional · 13 peopleMechanisms
Who was studied13 individuals with healthy or malignant blood formation
What changedEach blood cell retained >3000 prenatal DNA-marking changes in large segments stable for decades
The catchOnly 13 individuals supplied the blood-forming cells