FIG. 4.
Pathogenesis of isolates C8 and C11 in minipigs. Groups of eight minipigs were inoculated with the indicated TGEV isolates (isolates C8 and C11, a mixture of C8 and C11 [70% C8 plus 30% C11], or the virulent uncloned isolate ST2) as described in the legend for Fig. 3. The number of piglets without enteritis (■) or surviving (●) is shown at different days postinfection. Results of a representative experiment of two that gave similar results are shown.