Early thymic progenitors (ETPs) Marker ExpressionCD4 Expression: -Required markerRequiredCD25 (IL-2RA) Expression: -Citations:[1]Required markerRequiredKIT (CD117) Expression: +++Citations:[1]Required markerRequiredCD8a Expression: -Required markerRequiredCD1a Expression: - Human only Suggested markerSuggestedCD44 Expression: + Analysis strategy: CD44+CD25- thymocytes are a heterogeneous population, not only ETPsCitations:[1]Cell/subset InformationETPs are the earliest stage of thymic T cell development. They migrate to the thymus from the bone marrow.AliasesETPsDN1 thymocytesDN1 T cellsTagsT lymphocytelymphoidhematopoieticmesodermInformationCreated Michael Lehrke2025-04-12, 02:56:16 UTCUpdated Michael Lehrke2025-04-12, 03:25:34 UTC