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Amino acid sequence alignments of ADE and neutralizing epitopes in SARS-CoV-2 variants. Amino acid residue variations are highlighted in yellow. -, identity; ∆, deletion. Note that the 144-158 neutralizing epitope of the mu (µ) variant displays a threonine residue (T, in red) inserted after Y144, then two mutations after this insertion (colored in blue). The insertion induces a shift of the amino acid sequence (highlighted in grey).
