Gribkova N V, Kazak N F, Votyakov V I
Acta Virol. 1984 Jan;28(1):69-72.
A resistant influenza virus has been obtained during successive passages of influenza A virus in 10 to 11-day-old chick embryos (CE) in the presence of 2-(1'-amino-ethyl)-bicyclo(2.2.1) heptane chlorohydrate possessing a high antiviral activity. The virus resistance to the inhibitor was not lost after one passage in the absence of the drug.