Enrichment for a thymocyte subset having progenitor cell activit

Chemistry: molecular biology and microbiology – Spore forming or isolating process

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435 724, 424 9371, 4241401, 4241431, 4241541, 53038875, C12N 1585, G01N 3353, A61K 39395

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active

058211080

ABSTRACT:
A subpopulation in the CD4.sup.+ 8.sup.+ (DP) thymic blast population is identified that is the precursor for thymic T cells. All such progenitors are c-kit.sup.+. The c-kit.sup.+ subset expresses lower levels of CD4 and CD8 than the large and small DP c-kit- cells. These DP.sup.int c-kit.sup.+ cells differentiate to thymic T cells rapidly on heterogenous thymic stromal cell cultures. Similar maturation takes place in vivo over 4 days. A method for isolating the cells which are c-kit.sup.+ and which express intermediate or low levels of CD4+/CD8+ is also disclosed.

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