Dr. Alick Isaacs and Dr. Sam Baron discovered interferon in 1957 using a plaque assay. They published their findings in the Proceedings of the Royal Society showing that interferon could be measured and helped inhibit viral replication. Later work by Glasgow in 1980 and an adapted figure from Dianzani and Baron's 1996 medical microbiology textbook helped further explain the interrelationships between interferon and immunity during viral infections, particularly for acute influenza virus infection.