Box plot comparing tetramer responses to class I hTERT peptide. Class I peptides of hTERT (p540 and p865) were compared for the efficacy of the tetramer response. hTERT-p865 generated a higher tetramer response compared with hTERT-p540, though this was not statistically significant (p = 0.06. Wilcoxon signed rank test). Values are represented as median(bar), interquartile range (box) and range (whiskers).