Kelp extracts as antiviral substances.
D000818:Animals; D000998:Antiviral Agents / Q000494:pharmacology*; D055598:Chemical Phenomena; D002621:Chemistry; D002642:Chick Embryo; D004798:Enzymes; D056890:Eukaryota; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D009439:Neuraminidase; D009975:Orthomyxoviridae / Q000187:drug effects* / Q000201:enzymology