Isolation, purification and characterization of polypeptides of influenza and parainfluenza viruses. Note III. Polypeptides of three influenza virus strains isolated in Romania.

An analysis is presented of the nature, number and relative molecular mass of the polypeptides of three influenza virus strains-A/Romania 1/73 (H3N2), A/Romania 1/75 (H3N2), and B/Romania 34/74-isolated during different epidemic outbreaks. The results obtained indicate some similarities between the protein subunits of the two influenza A virus strains (as concerns virus surface and nucleocapsid components) and point out the particular properties of the influenza B strain.