title: The watchmaker's dilemma: building a tower of microenvironments in vitro.
authors.forename: M
authors.initials: M
authors.lastname: Tavassoli
mesh_terms: D000818:Animals; D016026:Bone Marrow Transplantation / Q000379:methods; D002478:Cells, Cultured; D004780:Environment, Controlled; D006410:Hematopoiesis / Q000502:physiology*; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques