the invasive rate to HeLa cell was . % and a virulent strain S. sonnei strain S was 8 .%.
the invasive rate to HeLa cell was . % and a virulent strain S. sonnei strain S was 8 .%.
细菌侵入HeLa细胞的侵袭百分率为 . % ,毒株S 为 8 . % ;
the invasive rate to HeLa cell was . % and a virulent strain S. sonnei strain S was 8 .%.
细菌侵入HeLa细胞的侵袭百分率为 . % ,毒株S 为 8 . % ;