FIG. 2.

Rhesus monkey anti-HEV convalescent-phase serum neutralizes wild-type HEV produced in vitro. A lysate of cells transfected with HEV genomes was incubated overnight with PBS or rhesus monkey serum collected prior to (Pre) or after (Post) infection with HEV, and the number of infectious virions was quantified on 10-3 cells. The preimmune serum was not diluted; dilutions of postinfection serum are indicated. Pairs of columns represent duplicate samples read before the code was broken. Undil, undiluted.