member of the transforming growth factor family (TGF-beta) induces and inhibits the proliferation of My-bi and Ly-bi HSC, respectively. Etymology From Greek haimato-, combining form of haima 'blood', and from the Latinized form of Greek poietikos 'capable of making, creative, productive', from poiein 'to make, create'. See also Hematopoietic stem cell niche References External links Fact sheet about blood stem cells on EuroStemCell Blood cells Stem cells