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. 2020 Mar 27;11:1620. doi: 10.1038/s41467-020-15562-9

Fig. 6. Limited cross-neutralization of SARS and COVID-19 sera.

Fig. 6

All sera were incubated on 56 °C for 30 min to eliminate complement. SARS-CoV S and SARS-CoV-2 S pseudovirons were pre-incubated with serially diluted SARS patient serum (a) or COVID-19 patient sera (b) for 1 h on ice and then added on 293/hACE2 cells. Pseudoviral transduction was measured 40 h later. Experiments were done in triplicates and repeated twice, and one representative is shown. Error bars indicate SEM of technical triplicates. Source data are provided as a Source Data file.