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According to Rita Balice-Gordon, CEO of Muna Therapeutics, small molecules that work differently than antibodies might be a better bet

Indeed, allogeneic T cells are currently in clinical trials for COVID-19 hyperinflammatory syndrome (NCT04482699)

Delafontaine P, Song YH, Li Y: Expression, regulation, and function of IGF-1, IGF-1R, and IGF-1 binding proteins in blood vessels

This also elaborates that one can not sell peptides as a sports or health supplement
