. . . ." To administer its vaccine, the Radvac group settled on mixing the peptides with chitosan, a substance from shrimp shells, which coats the peptides in a

. . . ." To administer its vaccine, the Radvac group settled on mixing the peptides with chitosan, a substance from shrimp shells, which coats the peptides in a nanoparticle able to pass the mucous membrane " The author is in error, chitin is derived from crustacean shells, but chitosan is an artificial compound created by treating chitin with highly alkaline chemistry. I have samples of pharma chitosan and I can tell you when mixed into aqueous solutions at low conc. and administered onto human mucous membranes it burns like fire . . .