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Figure 1. A. Different routes of exposures of products containing PEG. B. Threshold of reactivity for PEG in relation to concentration and molecular weight. Biorender software was used to create the figure under an academic license.

Figure 2 . A. Possible interaction of mast cells with PEG-2000 or viral RNA. B. Possible complement-activation related pseudoallergy induced by PEGylated nanobodies. Biorender software was used to create the figure under an academic license.