Definition
A helper T cell, also known as a CD4+ T cell, is a type of T lymphocyte that plays a crucial coordinating role in the immune system. Think of them as the generals in your immune army, directing the other immune cells to fight effectively. ๐ฃ They don't directly kill infected cells, but instead, they release cytokines, signaling molecules that activate B cells, cytotoxic T cells, and other immune cells. Helper T cells are essential for mounting a strong and coordinated immune response against a wide range of pathogens. They are also the primary target of HIV, which can severely impair their function.