Th1

Th1 cells are a type of immune cell that helps the body fight certain infections, especially those caused by bacteria and viruses inside cells. They produce chemicals called cytokines that activate other immune cells to destroy the invaders. Th1 cells are important for cell-mediated immunity, which is different from antibody-based defenses. They also help coordinate inflammation and protect against intracellular pathogens, ensuring the body can effectively clear infections that hide inside cells. Their activity is a key part of the immune system's adaptive response, tailoring defenses to specific threats.