Fig. 2From: A comparative study of multiple clinical enterovirus 71 isolates and evaluation of cross protection of inactivated vaccine strain FY-23 K-B in vitroOne-step growth curves of ninety clinical isolates and the prototype strain in Vero cells. The viruses were titrated by microplate cytopathic method. The data was shown as MEAN ± SD (n = 3 independent experiments)Back to article page