Covey, T.

stromal clone stromal clones hematopoietic stromal cell lines expression embryo growth culture tsa 58 transgene tsa 58 gene tsa 58 minute mouse cell lines stromal cells control tissue factor analysis transgene support number blood hematopoietic growth factors medium level cycle protein murine differentiation rt-pcr tag 5 stromal lines antigen dzierzak isolation 0.0 hematopoietic progenitors table progenitors activity 1 cycle supernatant bl 1b mouse embryo 30 seconds adult region 10 minutes second 1 minute actin hematopoiesi marrow moore presence microenvironment liver 2 minutes cfc production medvinsky hematopoietic cells il -3 26-1b subregion study /104 maintenance e 11 tissues expansion proliferation g-csf fragment condition production bruijn founder facs analysis am-derived