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f0230938

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 deactivation of T-cells. The proteins are: TCR (blue), CD-4 (light blue), CD-28 (dark blue), PD-1 (pink), CTLA-4 (purple). CD-4 and CD-28 activate T-cells, while PD-1 and CTLA-4 inhibit the activation of T-cells. (Photo by: SCIENCE PHOTO LIBRARY via AP Images)

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18337809987937
Royalty-Free (RF)
December 03, 2018 05:29:58 PM
December 03, 2018 10:38:40 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 11.25 MB
ACTIVATION, ADAPTIVE, IMMUNITY, ANTIGEN, BIOCHEMICAL, BIOLOGICAL, CYTOTOXIC, T, CELL, DEACTIVATION, DISEASE, HELPER, IMMUNE, SYSTEM, IMMUNOLOGICAL, KILLER, LYMPHOCYTE, MEDICINE, MOLECULES, NATURAL, NO-ONE, NOBODY, RECEPTOR, WHITE, BLOOD, PROTEIN, RECEPTORHUMAN, BODY, MEMBRANE, ACTIVATING, DEACTIVATINGBIOCHEMISTRY, IMMUNOLOGY, BIOLOGY, MOLECULAR, ARTWORK, ILLUSTRATION
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CTR

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