negative regulation of tolerance induction / regulatory T cell apoptotic process / negative regulation of immune response / negative regulation of T cell mediated immune response to tumor cell / negative regulation of T cell activation / B cell apoptotic process / positive regulation of T cell apoptotic process / negative regulation of B cell apoptotic process / humoral immune response / Co-inhibition by PD-1 ...negative regulation of tolerance induction / regulatory T cell apoptotic process / negative regulation of immune response / negative regulation of T cell mediated immune response to tumor cell / negative regulation of T cell activation / B cell apoptotic process / positive regulation of T cell apoptotic process / negative regulation of B cell apoptotic process / humoral immune response / Co-inhibition by PD-1 / regulation of immune response / signaling receptor activity / adaptive immune response / Potential therapeutics for SARS / external side of plasma membrane / apoptotic process / plasma membrane Similarity search - Function