tokens: Vaccination with synthetic peptides representing cytotoxic T lymphocyte ( CTL ) epitopes can lead to a protective CTL-mediated immunity against tumors or viruses .
folded_tokens: vaccination with synthetic peptides representing cytotoxic t lymphocyte ( ctl ) epitopes can lead to a protective ctl-mediated immunity against tumors or viruses .
labels: O O B-peptide I-peptide O B-peptide I-peptide I-peptide I-peptide I-peptide I-peptide I-peptide O O O O O B-other_name I-other_name O B-tissue O B-virus O