GUANGZHOU, Nov. 27 (Xinhua) — Two new nanoparticle vaccines for SARS-CoV-2, the virus that causes COVID-19, can elicit potent neutralizing antibodies and cellular immune responses in animals, sources with the Guangzhou-based Sun Yat-sen University said Friday.

The university researchers formulated two nanoparticle vaccines based on the receptor binding domain and heptad repeat of the SARS-CoV-2.…

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