Graphs of the variation in the model dynamics when a parameter is multiplied by a factor. Parameters are given by the common fit with ly=20 and X(0)=1448 (table 3). (a) Blood-to-interstitial space rate, kxy (h−1), (b) interstitial space-to-blood rate, kyx (h−1), (c) blood-to-interstitial space volume ratio, r, (d) interstitial space virus clearance rate, ly (h−1), (e) interstitial-to-cell infection, hy (genomes ml−1 h−1), (f) cell-to-cell infection, hf (cell−1), (g) reduced infection, m (genomes ml−1), (h) rate infected cells die, lf (h−1), (i) virus released cell−1 (proportion of total), b (genomes ml−1 cell−1), (j) initial dose, X(0) (genomes ml−1) and (k) key of scaling factors.