T-βοηθητικά, or T-helper cells, are a type of white blood cell that play a crucial role in the immune system. They help activate and direct other immune cells, such as B cells and cytotoxic T cells, to respond effectively to infections. T-helper cells recognize specific antigens presented by antigen-presenting cells and release signaling molecules called cytokines to coordinate the immune response. There are different subsets of T-helper cells, including Th1, Th2, and Th17, each with distinct functions. For example, Th1 cells are primarily involved in fighting intracellular pathogens, while Th2 cells help combat extracellular parasites and are important in allergic responses. Understanding T-βοηθητικά is essential for developing vaccines and therapies for various diseases.