IFNB1 and infection: Similarly, IFN-β cytokine production was comparable among all three astrocytes at 48 h of MR766 strain post-infection, but IFN-β production was higher in HASTR/ci35 and hTERT astrocytes compared with CCF-STTG1 cells at 72 h post-infection (Figure S1) consistent with the trend in IFN-β mRNA expression dynamics (Figure 3A).