The best phrase that describes T helper 1 (TH1) cells is activate cell-mediated immunity and phagocytic cells resulting in delayed hypersensitivity reactions.
What is the role of T cell?
Th1 cells produce cytokines mainly related to phagocytosis-mediated defense against intracellular infectious agents, such as Interferon-gamma (INF-γ), IL-2 and Tumor Necrosis Factor alpha (TNF-α).
The T helper cells (Th cells) are a type of T cell that play an important role in the immune system, particularly in the adaptive immune system. They help the activity of other immune cells by releasing T cell cytokines.
See more about T cell at brainly.com/question/27459085
#SPJ1
