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Active components and full list of excipients of the vaccines. Potential triggers of allergic reactions are indicated in red color in the lists. The principles of the PEGylated-lipid nanoparticles as a delivery system for the mRNA is depicted in the lower part for BNT162b2 and mRNA-1273 vaccines. The replication-deficient adenovirus ChAdOx1 vector for the AZD1222 vaccine is also depicted. Biorender software was used to create this figure under an academic license.
