Functions of CD4+ Effector T Cells Chapter 10 I. Introduction II. Th1 A. Cytokine = IFN-g B. Location C. Development D. Function 1. classical macrophage activation E. CD40L - CD40 F. Intracellular microbes III. Th2 A. Cytokines B. Location C. Development D. Function 1. IL-4 2. IL-13 3. IL-4 & -13 a. alternative macrophage activation 4. IL-5 IV. Th17 A. Cytokines B. Location C. Development D. Function 1. IL-17 2. IL-22 E. Disease Contribution V. Tfh A. Cytokines B. Location C. Function