The th1 th2 immune response determines how the body reacts to infections. A balanced th1 th2 immune response prevents excessive inflammation or allergic reactions. Th1 cells release interferon-gamma for cellular defense, while Th2 cells produce IL-4 and IL-5, promoting antibody production and regulating immune equilibrium efficiently. https://www.betalifesci.com/blogs/news/th1-vs-th2