title: Helper T-cell heterogeneity: a complex developmental issue in the immune system.
authors.forename: Chen
authors.initials: C
authors.lastname: Dong
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D019070:Cell Lineage; D006801:Humans; D010506:Periodicals as Topic; D006377:T-Lymphocytes, Helper-Inducer / Q000166:cytology* / Q000276:immunology*