Figure 4.

Density-dependent infected cell clearance rate and correlation to linear regression. (A) The infected cell clearance rate (δ(I₂), Equation 5) is plotted for different values of infected cells (I₂). The green diamond and the blue dot indicate the corresponding infected cell clearance rates during the slow and fast phases of virus clearance, respectively. These correspond to linear regression estimates in (B). (B) Linear regression fits to the viral load data (white squares) during the growth phase (4 h–1 d pi, red line), the first phase of virus decay (2–6 d pi, green line), or the second phase of virus decay (7–8 d pi, blue line). The dashed black line is the fit of the density-dependent viral kinetic model (Equations 1–5) to the viral load data.