FIG. 2.

Neutralization of sensitive versus resistant subtype E viruses using pooled and individual subtype E-infected patient plasmas. The percentages of neutralization by the two E NAb pools, as well as by 10 single E plasmas, are shown for three different viruses. M066 (black bars) is an NSI-sensitive isolate (strongly neutralized by three NAb pools), while NP1564 (white bars) and NP1453 (hatched bars) are the most resistant NSI and SI isolates. The dashed line indicates the 84% neutralization cutoff for sensitive viruses.