Plaque formation by influenza viruses in the presence of trypsin.
D000818:Animals; D002478:Cells, Cultured; D002642:Chick Embryo; D002918:Chymotrypsin / Q000494:pharmacology; D009975:Orthomyxoviridae / Q000187:drug effects / Q000254:growth & development*; D011402:Pronase / Q000494:pharmacology; D013381:Subtilisins / Q000494:pharmacology; D013820:Thermolysin / Q000494:pharmacology; D014357:Trypsin / Q000494:pharmacology*; D014361:Trypsin Inhibitors / Q000494:pharmacology; D010948:Viral Plaque Assay / Q000379:methods*; D014776:Virus Cultivation
D014361:Trypsin Inhibitors; D013381:Subtilisins; D002918:Chymotrypsin; D014357:Trypsin; D011402:Pronase; D013820:Thermolysin