title: Bringing you negative selection, live and in color.
authors.affiliation: Freelance Science Writer, San Diego, California, United States of America. csedwick@gmail.com
authors.forename: Caitlin
authors.initials: C
authors.lastname: Sedwick
mesh_terms: D000818:Animals; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000276:immunology*