FIG. 5.

Mean log enrichment of wild-type virus and estimated liver growth in all birds. The log enrichments over the inoculum, depicted in Fig. 3, were averaged among all birds at each time point and compared with the mean log estimated liver mass divided by the estimated liver mass at the time of inoculation. The lines represent separate linear regressions of the sequential data from three time intervals, 0 to 45 days postinfection (○), 45 to 101 days postinfection (▵), and 101 to 235 days postinfection (□).