FIG. 2.

Specific binding of TGEV to pAPN-MDCK cells. MDCK cells permanently expressing human APN (a) or pAPN-MDCK cells (b) were incubated with TGEV (solid lines) or mock incubated (dotted lines). Cellular binding of TGEV was monitored by flow cytometry after incubation with a porcine anti-TGEV serum followed by incubation with a fluorescein isothiocyanate-labelled rabbit IgG directed against porcine IgG.