title: A discrete affinity-driven elevation of ZAP-70 kinase activity initiates negative selection.
authors.affiliation: Laboratory of Transplantation Immunology and Nephrology, Department of Biomedicine, University Hospital Basel, Basel, Switzerland.
authors.forename: Michel
authors.initials: M
authors.lastname: Mallaun
authors.forename: Gerhard
authors.initials: G
authors.lastname: Zenke
authors.forename: Ed
authors.initials: E
authors.lastname: Palmer