Chemokines, originally designated as chemoattractant cytokines, comprise a large family of
molecules that have been implicated in a number of different functions mediated through
chemokine receptors. Among these functions are regulatory roles in hematopoiesis that
encompass effects on the proliferation, survival, and homing/migration of myeloid progenitor
cells. This article reviews the field of chemokine regulation of hematopoiesis at the level of
myeloid progenitor cells.