A peptide cancer vaccine containing amino acid residues 340-349 of the Epstein-Barr virus (EBV) latent membrane protein-2 (LMP-2) with potential immunostimulating and antineoplastic activities. Vaccination with LMP-2:340-349 peptide may boost the immune system to mount a specific cytotoxic T-lymphocyte (CTL) response against LMP-2-expressing tumor cells, resulting in cell lysis and inhibition of tumor cell proliferation. LMP-2, an EBV transmembrane protein, is expressed in various malignancies including nasopharyngeal cancer and EBV-positive Hodgkin disease.