Hematopoietic progenitor cells from decentralized bone marrow showed decreased long-term colony formation.

In long-term assays, progenitor cells collected from bone marrow below the site of the spinal cord injury had a significantly (*) reduced ability to form all types of colonies from bone marrow sampled from the sternum (A) and the iliac crest (B). CFU-E–erythroid, CFU-M–macrophage, CFU-G/M–granulocyte/macrophage, and CFU-G–granulocyte colonies. Progenitor cells collected from bone marrow below the site of the spinal cord injury had a significantly reduced ability to form dendritic cell colonies in both short- (C) and long-term (D) assays. Values are mean + SEM, n = 6. Note the different values on the x-axes.