Fig. 5

In vitro neutralization assay. a Cells infected by EV71 Bj08 strain. b Cells infected by EV71 BrCr-TR strain. c, d Uninfected cells. e Cells infected by Bj08 strain reacted with anti-VLP serum. f Cells infected by BrCr-TR strain reacted with anti-VLP serum. g Cells infected by Bj08 reacted with anti-inactivated EV71 serum. h Cells infected by BrCr-TR strain reacted with anti-inactivated EV71 serum. i Cells infected by Bj08 reacted with anti-denatured VLP serum. j Cells infected by BrCr-TR strain reacted with anti-denatured VLP serum. Size bar 50 μm