Keywords: T cell activation - ru.svg Inkscape ru Реханизм активации Т-лимфоцитов en The T lymphocyte activation pathway is triggered when a T cell encounters its cognate antigen coupled to a MHC molecule on the surface of an infected cell or a phagocyte T cells contribute to immune defenses in two major ways some direct and regulate immune responses; others directly attack infected or cancerous cells 2014-07-22 00 01 14 File T cell activation svg T_cell_activation png Template drawing and caption text from The Immune System any modifcations made by myself are released into the public domain derivative work User Kaidor PD-USGov <gallery>T cell activation svg en </gallery> ru image Translation possible Uploaded with UploadWizard Biology diagrams Immunology Microbiology Diagrams in Russian SVG cell biology |