CXCR1 and infection: This 67% and 62% decrease (at 2 and 4 dpi, respectively) in MCT as infection peaked within the epithelium was closely associated with diminished motile CC, which was reduced from 23.9% ± 2.8% in mock to 5.0% ± 0.7% (P = 0.0010), 6.6% ± 1.3% (P < 0.0001), and 14.1% ± 2.7% (P = 0.0324) at 2, 4, and 7 dpi, respectively, representing 21%–28% of the normal level at peak viral replication/infection that partially recovered to 59% of mock by 7 dpi (Figure 3D).