Figure 1. Scheme of experimental design and viral RNA and infectious virus in mucosal swabs and lung tissue samples. A total of 6 macaques were selected to investigate the characteristics of the SARS-CoV-2 Delta variant. (A) Baseline samples were collected on day 0 and all macaques were inoculated with SARS-CoV-2. Clinical signs, viral kinetics, and humoral and cellular immune responses to SARS-CoV-2 infection were observed at the indicated time points. (B) Viral RNA (copies/ml) and infectious virus (TCID50/ml) were determined in nasal and throat swab samples and lung tissues, and recorded at the indicated dpi. Circles indicate individual data and bar values represent the mean ± SEM.
