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HA titers of chick embryos after H1N1 infection and treatment with FT extract and oseltamivir (in ovo). In the FT treatment group, the viral suspension (0.1 ml of 50EID50) was injected into allantoic fluid in combination with 0.1 ml FT extract in PBS, and HA titer values compared with those obtained in the oseltamivir and placebo (PBS only) groups (**p < 0.001 for comparison with placebo groups).
