Table 2.

Comparison of IFN-γ VZV ELISPOT responses of frozen PBMCs exposed to different storage conditions

DonorAdjusted SFCa/106 PBMCs with the following storage conditions for the frozen PBMC aliquot prior to assay testingb:
LN2LN2, DI 24 hLN2, DI 24 h, LN2LN2, DI 48 h, LN2LN2, DI 24 h, LN2, DI 24 h, LN2
1481244218179171 NTc
  • a See Table 1, footnote a.

  • b LN2, liquid nitrogen, vapor phase storage; DI, samples encased in dry ice.

  • c NT, not tested.