Blom, B.

thymocyte expression il -7 t cells pja-bp balb-rag pja-bp expression huil -7 murine development thymu subpopulation probe differentiation rearrangement muil -7 receptor immunol thymocyte subpopulations fraction number progenitors t cell development analysis result experiment bone marrow hematopoietic mouse tcr gene deletion lymphoid t cell differentiation recj rearrangements frequency cd 127 deletion marrow blood extract emsa experiments thymopoiesi tcr deletion lineage thymic progenitor segment gfp ϩ cells animal maintenance vector immunology survival bcl -2 transplantation thymocyte subpopulation /hucd t cell lineage cd 8 cells system chimeric mu /hucd interleukin factor protein control murine thymocytes bcl-xl homeostasi www.jimmunol.org model van dongen lymphoid organs binding blot analysis j gene segment 34ϩcd huil -7 treatment downloaded b cells cd 1a subset