We know today that Wnt and a handful of other signalling systems (Notch, Hedgehog, TGFβ (transforming growth factor-β)–BMP (bone morphogenetic protein) and receptor tyrosine kinases ...

Interplay between osteoblasts and hemopoietic stem cells ... as well as interactions involving Wnt signaling. The bone marrow microenvironment also provides survival niches for antibody-secreting ...