f0230923

f0230923

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 receptor (TCR, blue), and CD4 (light blue) and B7-1 (orange) with CD-28 (dark blue), activating T-cells. The interaction of B7-1 (orange) with CTLA-4 (purple) and PD-L1 (yellow) with PD-1 (purple) deactivates T-cells. T-cells are a key part of the immune system. For this illustration with less labelling, see image F023/0922. (Photo by: SCIENCE PHOTO LIBRARY via AP Images)

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18337812176122
Royalty-Free (RF)
December 03, 2018 05:33:37 PM
December 03, 2018 10:41:36 PM
JUAN GAERTNER/SCIENCE PHOTO LIBRARY
SCIPHO
ASSOCIATED PRESS
Royalty-free photography. Special rates may apply. Please contact your AP representative with questions.
6827 x 5120 10.71 MB
ACCESSORY, CELL, ADAPTIVE, IMMUNITY, ANTIGEN, PRESENTATION, ANTIGEN-PRESENTING, CELLS, BIOCHEMICAL, BIOLOGICAL, CANCER, PREVENTION, THERAPY, CO-STIMULATION, CYTOTOXIC, T, DENDRITIC, DISEASE, DOWN-REGULATION, HELPER, IMMUNE, SYSTEM, IMMUNOLOGICAL, KILLER, LABEL, LABELED, LABELLED, LABELS, LYMPHOCYTE, MAJOR, HISTOCOMPATIBILITY, COMPLEX, MEDICINE, MHC, CLASS, MHC-COMPLEX, MOLECULES, NATURAL, NO-ONE, NOBODY, PEPTIDE, PROGRAMMED, DEATH, PROTEIN, RECEPTOR, SIGNAL, CASCADE, TRANSDUCTION, WHITE, BLOOD, ACTIVATION, DEACTIVATION, MEMBRANE, RECEPTORHUMAN, BODY, INTERACTING, BINDING, ACTIVATING, DEACTIVATINGBIOCHEMISTRY, IMMUNOLOGY, BIOLOGY, MOLECULAR, ARTWORK, ILLUSTRATION
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