Term Name:	lymphocyte costimulation
Synonyms:	lymphocyte co-stimulation
Definition:	The process of providing, via surface-bound receptor-ligand pairs, a second, antigen-independent, signal in addition to that provided by the B- or T cell receptor to augment B- or T cell activation.
Ontology:	GO: Biological Process [GO:0031294]    QuickGO    AmiGO