Fig. 3

Effects of QG on Newcastle disease virus (NDV)-IV immunization in chickens. A–D Changes in antibody titer (A), serum levels of IL-2 (B) and IFN-γ (C), and lymphatic cell proliferation (D) in chickens receiving no vaccination (Control), NDV-IV vaccination only (Model), or NDV-IV vaccination followed by 5 days of treatment with low-, medium-, or high-dose QG (QGL, QGM, and QGH, respectively)