Figure 2.
Platelets Provide T cell Co-Stimulation. T cells were incubated in anti-CD3 antibody or control PBS coated plates alone or with platelets or anti-CD28 antibody. A) IL-2 was measured by ELISA (n=4; ±S.D.,*P<0.01 vs CD3) and B) CD69 expression was measured by FACS (n=4; ±S.D.,*P<0.05 vs CD3).