none of the emulsifiers enhanced the plaquing efficiency of influenza a/pr/8/34 ( hon1 ) virus in madin-darby canine kidney cells ( less than a twofold increase ) , nor did percutaneous application of these emulsifiers at a concentration of 21 parts per thousand in peanut oil enhance the lethality of influenza a/pr/8/34 ( hon1 ) virus infection .
C0021400
influenza
C0042769
virus