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. 2022 Mar 3;7:69. doi: 10.1038/s41392-022-00926-y

Fig. 5.

Fig. 5

Cross-reactivity to all VOCs induced by PS-RBD. a Serum of the PS-RBD group were collected on day 49 and tested by ELISA for specific IgG against recombinant RBD of prototype, Alpha, Beta, Gamma, Delta, and Omicron variant. b Serum of PS-RBD group on day 49 was tested for cross-neutralizing antibody against GD108(prototype strain), Alpha, Beta, Delta, and Omicron strain