31. It is characteristic of hematopoietic stem cells, as well as muscle stem cells. 32. The remaining 70 % require an unrelated hematopoietic cell donor as a transplant source. 33. SCF may be used along with other cytokines to culture HSCs and hematopoietic progenitors. 34. Another method is hematopoietic stem-cell transfer, used for studying lymphocyte development. 35. The iPS cells then differentiated into blood stem cells, or hematopoietic stem cells. 36. The thymus provides an inductive environment for development of T cells from hematopoietic progenitor cells. 37. They promote the development and differentiation of T and B lymphocytes, and hematopoietic cells. 38. These characteristics correlate with reduced ability to repair double-strand breaks in hematopoietic tissue. 39. Identifying methods for maintaining hematopoietic stem cells in vitro is an active area of research. 40. It is a localized increase of hematopoietic bone marrow that creates a radiolucent radiographic defect.