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. 2022 Jul 4;25(8):104723. doi: 10.1016/j.isci.2022.104723

Table 1.

Definition of the variables in the model

Symbol Definition Initial value
[H] Population of susceptible healthy cells. 4.0 × 105 cells ml−1
[I] Population of infected cells. 0 cells ml−1
[DC] Population of dendritic cells. 1.0 × 103 cells ml−1 (Lee et al., 2009)
[APCR] Population of antigen-presenting cells at respiratory tracts. 0 cells ml−1
[V] The viral load of free SARS-CoV-2. 0.31 copies ml−1 (Hernandez-Vargas and Velasco-Hernandez, 2020)
[APCL] Population of antigen-presenting cells at lymph nodes. 0 cells ml−1
[CD4+T0]] Population of naive CD4+ T cells. 1.0 × 103 cells ml−1 (Lee et al., 2009)
[Th1] Population of type I helper T cells. 0 cells ml−1
[CD8+T0] Population of naive CD8+ T cells. 1.0 × 103 cells ml−1 (Lee et al., 2009)
[CTLL] Population of cytotoxic T lymphocyte at lymph nodes. 0 cells ml−1
[CTLR] Population of cytotoxic T lymphocyte at respiratory tracts. 0 cells ml−1
[Tfh] Population of follicular helper T cells. 0 cells ml−1
[B0] Population of naive B cells 1.0 × 103 cells ml−1 (Lee et al., 2009)
[pB] Population of plasma B cells. 0 cells ml−1
[Ig] The fold change in immunoglobulin.
This includes antiviral antibodies acting against SARS-CoV-2 that have been acquired upon seasonal human coronavirus infections as well as specific antiviral antibodies that are produced after SARS-CoV-2 infection, because a cohort of SARS-CoV-2–uninfected individuals showed to possess antiviral antibodies against SARS-CoV-2 (Ng et al., 2020).
110 molecules ml−1 (Lee et al., 2009)
[INF1] The fold change in type-I interferon. 0 fold change