Boersma, W.J.A.

marrow thymu bone marrow cells prothymocyte bone marrow transplantation donor thymocyte number density progenitor spleen distribution progenitor cells -1+ cells regeneration hemopoietic differentiation culture bone marrow transplantation t cells -1+ antigen mouse development growth t-cell liver colony chapter response density distribution subpopulation experiment proportion progenitors population thymus cells system study assay precursor lymphocytes radiation liver cells thymic surface value donor cells function difference lethally irradiation spleen cells lmmunol curve lineage hemopoietic cells thymidine level neuraminidase marker treatment fraction 3 h tdr capacity cell types cycling cells lymphoid thymocyte progenitor cells analysis method factor growth curves effect basch tissue host cells cycling result