Activation of T-cell immune response, illustration. Array of proteins interacting on the surface membranes of a T-cell (across bottom) and an antigen presenting cell (APC, across top). Shown here is the interaction of MHC-II (red) with the T-cell...

T cell binding antigen, illustration

"Cancer cell, illustration"

"Cancer cell, illustration"

Immune response activation. Illustration of antigen-presenting cell activity. Dendritic cells (bright blue) are shown presenting antigens to a lymphocyte (centre) through their membrane-bound major histocompatibility complex (MH) molecules (shown in...

Lymphocytes, illustration

Lymphocytes, illustration

Activation of T-cell immune response, illustration. Array of proteins interacting on the surface membranes of a T-cell (across bottom) and an antigen presenting cell (APC, across top). These proteins are involved in both the activation and...

Lymphocytes, illustration

Lymphocytes, illustration

Lymphocytes, illustration

T-cell receptors, illustration. Array of immunologically active proteins and a calcium ion channel (dark purple, upper centre) on the membrane of a T-cell, a key part of the immune system. These proteins are involved in both the activation and...

T-cell receptor-MHC-antigen complex