Looking for the part that says in humans instead of in mice. But seeing "mucosal Immunity" was particularly gratifying.
https://scitechdaily.com/needle-free-new-nano-vaccine-effective-against-all-covid-19-variants/
https://onlinelibrary.wiley.com/doi/10.1002/advs.202404159
https://onlinelibrary.wiley.com/doi/pdf/10.1002/advs.202404159