Response of HEK293T cells to purified EBOV. (A) Relative expression of FOS, JUN, ATF3, and CYR61 mRNA following infection by purified EBOV for 24 and 48 h. The mean ± standard error from three independent biological replicates is presented, with each replicate being performed as a duplicate PCR. (B) The levels of expression of total and phosphorylated forms of the JUN protein were assessed by Western blotting. β-Tubulin was used as a loading control. Western blot analysis was performed in duplicate from two independent experiments, with a representative image being shown here. *, P < 0.05; ***, P < 0.001.