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. 2023 Jul 7;14:1164851. doi: 10.3389/fmicb.2023.1164851

Figure 2.

Figure 2

Time of addition assays of Fan. (A) IPEC-J2 cells were cultured in 12-well plates and then treated using 20 μM Fan for 1 h before infection with the virus (pre-treatment), for 1 h during infection with the virus (co-treatment), for 23 h after infection with the virus removal (post-treatment), or during the whole infection period (full-time treatment). (B) PEDV RNA levels were determined using qRT-PCR analysis. (C, D) Western blotting detection of the effects of Fan (20 μM) on PEDV infection in IPEC-J2 cells various times (12–36 h). (E) The effects of Fan (20 μM) on PEDV N mRNA in IPEC-J2 cells for various times (12–36 h). VC, virus control; Pre, pre-treatment; Co, co-treatment; Po, post-treatment; Full, full-duration treatment. *P < 0.05; **P < 0.01; ***P < 0.001; and ****P < 0.0001 indicate significant differences vs. the control group.