cell mediated immune response

• cell meditated response: involves specialised white blood cells, called T-lymphocytes, which target pathogens inside and outside cells
• humeral response: involves specialised white blood cells called B-lymphocytes which target pathogens by producing antibodies
• phagocytosis is a non specific response
• plasma cells: secrete antibodies (primary response)
• memory cells: secondary response
• phagocytes: engulphs pathogens

  • destroys pathogens using lysosomes
  • the become APCs
• APC: present pathogenic antigens on its own cell membrane, signalling T-lymphocytes
• T-helper: stimulates

  • cytotoxic T cells
  • B cells
  • phagocytosis
  • memory T cells
• cytotoxic T cell: kill infected cells through the release of an enzyme that kills the cell