the hbcag was shown to be an extremely efficient immunogen in terms of t cell activation as measured by the in vivo dose required to induce t cell sensitization ( 1.0 microgram ) , and the minimal in vitro concentration required to elicit interleukin 2 ( il 2 ) production ( 0.03 ng/ml ) .
C1155065
t cell activation
C0039194
t cell