<prompt> In an ablated animal, myeloid series cells are injected. Which of following is seen after incubation period?RBCsFibroblastsT lymphocytesHematopoetic stem cells  <response>: Ans. a. RBCs Ref: Robbins 9e p580, 8e p590-593; Harrison 19e 89e-1, 18e p539-542As ablated animal is injected with myeloid series cell, it will show RBCs after incubation period.Hematopoietic Stem CellsHematopoietic stem cells are able to generate every lineage found in the hematopoietic system including RBCs, platelets and a variety of lymphoid cells.Hematopoietic Stem Cells differentiates into Two ProgenitorsCommon Lymphoid Progenitors CLPCommon Myeloid Progenitors Generate cells of the lymphoid cells; B and T lymphocytes, Natural killer cellsQ Generate RBCs, platelets, granulocytes and monocytes, dendritic cells, macrophage progenitorQHematopoiesisStem - Progenitor - Precursor - Adult - MatureCommitted Progenitor Stage to Mature Cell ErythropoiesisCommon myeloid progenitor - Proerythroblast - Basophilic erythroblasl - Polychromatic erythroblast - Polychromatic erythrocyte reticulocyte -Erythrocyte RBCCFV - colony firming unit; SCF Stem cells factor; FIt3L, Flt3 lipand; LIN - Nepatine for lineage specific markers 