S described in Table 2. Positive controls included SEB, PHA, and CEF. Negative controls included wells with mediumNIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Author ManuscriptVaccine. Author manuscript; available in PMC 2010 March 26.Greenough et al.Pageand cells but no stimulus. This background was subtracted from results of wells with peptides in the analyses. Positive responses wer