Viral load time courses for JRCSFNefdd infected mice and JRCSF infected mice with Cohort 1 tissue. a The data in Figure 2a is re-plotted to separate the four Cohort 1 mice from the other eight mice. Two Cohort 1 mice were infected with JRCSF and two were infected with JRCSFNefdd. b The remaining eight mice were plotted. These mice were from Cohorts 2–5; see Table 1).