Quantitation of cytokines by antibody array. Immunoblot array of the indicated cytokines were performed and fold induction over mock-infected HCE cells were determined as described in Methods. IL-1α and IL-1β were subjected to greater scrutiny with closer time points because their mRNAs were not induced when tested in Fig. 4. Each bar is derived from three independent infection experiments with the error bar as shown. Note the strong elaboration of IL-1β, contrasting the little increase of IL-1α.