Precision and linearity targets for validation of an IFNgamma ELISPOT, cytokine flow cytometry, and tetramer assay using CMV peptides. - Maecker HT; Hassler J; Payne JK; Summers A; Comatas K; Ghanayem M; Morse MA; Clay TM; Lyerly HK; Bhatia S; Ghanekar SA; Maino VC; et al. (BMC immunology, 2008)