title: Observations on antiviral screening.
mesh_terms: D000818:Animals; D000998:Antiviral Agents / Q000494:pharmacology*; D004686:Encephalomyocarditis virus / Q000187:drug effects; D066298:In Vitro Techniques; D009975:Orthomyxoviridae / Q000187:drug effects; D010649:Phenylalanine / Q000494:pharmacology
chemical_list: D000998:Antiviral Agents; D010649:Phenylalanine