Cell-mediated immunity (cellular immunity), which is also known as T cell-mediated immunity, is a type of immune response that is mediated by T lymphocytes (T cells). This type of immunity targets intracellular pathogens such as viruses, bacteria, and parasites that have infected host cells.
In cell-mediated immunity, antigen-presenting cells (APCs) present antigens to T cells, which recognize and respond to specific antigens. Upon activation, T cells differentiate into effector cells that mediate the immune response. The effector T cells include cytotoxic T lymphocytes (CTLs) that can directly kill infected cells, helper T cells that secrete cytokines to recruit and activate other immune cells, and regulatory T cells that suppress the immune response to prevent harm to the host.
Cell-mediated immunity is critical for controlling infections caused by intracellular pathogens, and it plays a role in transplant rejection, tumor surveillance, and autoimmune diseases.
Ne Demek sitesindeki bilgiler kullanıcılar vasıtasıyla veya otomatik oluşturulmuştur. Buradaki bilgilerin doğru olduğu garanti edilmez. Düzeltilmesi gereken bilgi olduğunu düşünüyorsanız bizimle iletişime geçiniz. Her türlü görüş, destek ve önerileriniz için iletisim@nedemek.page