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"
1 Department of Biomolecular Science and Reaction, SANKEN (The Institute of Scientific and Industrial Sciences), Osaka University, Ibaraki, Osaka, Japan msomiya@sanken.osaka-u.ac.jp.