Comment on “Cutting Edge: Circulating Exosomes with COVID Spike Protein Are Induced by BNT162b2 (Pfizer-BioNTech) Vaccination prior to Development of Antibodies: A Novel Mechanism for Immune Activation by mRNA Vaccines”

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<!-- START_ABSTRACT --> <p> I read with surprise that Bansel et al. ([1][1]) detected the exosomal spike protein (S2) of SARS-CoV-2 in the vaccinee's plasma 4 mo after vaccination of BNT162b2. There are notable caveats in their analysis; first, the authors used the precipitation-based commercial kit for the exosome isolation, </p> <!-- END_ABSTRACT --> <!-- START_TEMPLATE --> <ul> <li> Source: </li> <li> Tags: </li> </ul> <!-- END_TEMPLATE -->

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Aquiles Carattino
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