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Stability of HBCA- and HBMEC-derived WNV particles. Culture supernatants recovered from WNV-NY- or WNV-MAD78-infected HBMECs (m.o.i. 0.1) and HBCAs (m.o.i. 0.01) at 48 h post-infection were incubated at 37 °C. Aliquots were removed at the indicated times and infectious particles quantified by plaque assays on Vero cells. Values represent the mean±se p.f.u. ml–1 of at least two independent experiments.
