Meanwhile, nuclear and cytoplasmic fractions were collected and subjected to immunoblot analysis, and the results indicated that FBP1 remained primarily in the nucleus during mock infection (Fig 1F, lanes 1 and 2), but appeared in the cytoplasmic faction at increasing levels over 2 to 6 h.p.i. (Fig 1F, lanes 3, 5, and 7). This evidence concerns the gene FBP1 and infection.