i-ad-restricted t cell clones that recognize synthetic peptides corresponding to two distinct antigenic regions of the ha1 subunit , ha1 56-76 and ha1 177-199 , are cytotoxic and , dependent on epitope specificity can recognize endogenously processed ag and lyse class ii+ target cells infected with a recombinant vaccinia-x31 ha virus .
C0003320
antigenic
C0003316
epitope