PD-L1/PD-1 Co-Stimulation, a Brake for T cell Activation and a T cell Differentiation Signal

Therese Liechtenstein¹, Ines Dufait^1,2, Christopher Bricogne¹, Alessio Lanna¹, Joeri Pen², Karine Breckpot² and David Escors^1*

¹Division of Infection and Immunity, Rayne Institute, University College London, 5 University Street, WC1E 6JF, London, UK

²Department of Physiology-Immunology, Laboratory of Molecular and Cellular Therapy, Vrije Universiteit Brussel, Laarbeeklaan 103/E, B-1090 Jette, Belgium

^*Corresponding Author: David Escors, Division of Infection and Immunity, Rayne Institute, University College London, 5 University Street, WC1E 6JF, London, UK Email: