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Retraction: Sung et al. Expression of SARS-CoV-2 Spike Protein Receptor Binding Domain on Recombinant B. subtilis on Spore Surface: A Potential COVID-19 Oral Vaccine Candidate. Vaccines 2022, 10, 2.
Sung JC, Liu Y, Wu KC, Choi MC, Ma CH, Lin J, He EIC, Leung DY, Sze ET, Hamied YK, Lam DM, Kwong KW. Sung JC, et al. Among authors: leung dy. Vaccines (Basel). 2022 Nov 1;10(11):1852. doi: 10.3390/vaccines10111852. Vaccines (Basel). 2022. PMID: 36366412 Free PMC article.