Axonal transport of PRV and ZIKV to contralateral cortex. After comicroinjection (300 nl) of PRV and ZIKV to the left cortex, both viruses are carried by axonal transport to the contralateral right cortex by 3 dpi. A, ZIKV immunoreactivity. Scale bar, 18 μm. B, PRV GFP green reporter expression. C, Merged image showing that some cells are infected only with ZIKV (orange arrows), only with PRV (green arrows), or with both PRV and ZIKV (white arrows).