Figure 5
From: Protective essential oil attenuates influenza virus infection: An in vitro study in MDCK cells
Effects of essential oil treatment on PR8 production are not due to cytotoxicity. Cell viability was determined using trypan blue exclusion at 7 and 24 h of essential oil exposure. Data were presented as the mean ± SEM from at least 3 independent experiments. Means were compared to data from the control oil group. **P < 0.01.