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. 2023 Feb 24;616:128604. doi: 10.1016/j.physa.2023.128604

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Fig. 2 — Solutions of system (31)–(36) with three initial conditions when $R_{1}^{A} \leq 1 < R_{0}$ , $R_{1}^{C} \leq 1$ and $d_{T} - r + \frac{r T_{1}}{T_{m a x}} > 0$ . (a) Healthy epithelial cell; (b) Latent infected cells; (c) Active infected cells; (d) SARS-CoV-2 particles; (e) Antibodies; (f) CTLs.