CD4 Inhibits Helper T Cell Activation at Lower Affinity Threshold for Full-Length T Cell Receptors Than Single Chain Signaling Constructs - Johnson, Deborah K.; Magoffin, Wyatt; Myers, Sheldon J.; Finnell, Jordan G.; Hancock, John C.; Orton, Taylor S.; Persaud, Stephen P.; Christensen, Kenneth A.; Weber, K. Scott (Frontiers in Immunology, 2021)