Which of the following statements is true regarding Gamma interferon (INF-γ):
A- INF-γ causes basophils and eosinophils to degranulate
B- INF-γ can be used to test for tuberculosis
C- INF-γ attenuate phagocytes.
D- INF-γ activates and differentiates B lymphocytes
E- INF-γ is secreted by type 2 helper T cells
