CD8+ T Cell Surface Marker

Cytotoxic T Lymphocytes (CTLs), or CD8+ T cells, are a vital component of the adaptive immune system, specialized in directly recognizing and eliminating infected cells (e.g., by viruses or intracellular bacteria) and cancerous cells. Their ability to precisely target and induce apoptosis in dysfunctional cells without harming healthy ones is critical for maintaining host defense and tumor surveillance. This precise recognition and killing capability relies heavily on a unique array of surface markers that define their identity, guide their interactions, and facilitate their activation.