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“Unlike animal cells, the bacteria do not require pre-treatment with actinomycin D. The interferon translated by bacteria is inactivated by trypsin and resistant to ribonuclease.”
The Journal of general virology • 1974 | View Paper
“Both the anti-cellular and the anti-viral activities were markedly reduced by pretreatment of the interferon preparations with trypsin , sodium periodate or by heating at 60° for 1 hr.”
“The macrophage-activating factors contained in lymphokine and interferon preparations were stable at pH 2 and at 56 degrees, but they were destroyed when heated at 80 degrees for 30 min, and were inactivated by trypsin.”
“Inactivation of the antiviral activity of the interferon by heating or digestion with trypsin also abolished the effect on cell-free protein synthesis.”