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Immunologically active proteins on a T-cell. TCR (blue), CD-4 (light blue), CD-28 (dark blue), PD-1 (magenta), CTLA-4 (violet), Ca-channel (dark violet). The T-cell receptor, CD-4 and CD-28 activate T-cells, while PD-1 and CTLA-4 inhibit the activat
Keywords:
medicine
bacterium
microbiology
science
healthcare and medicine
blood
biology
illness
molecular structure
virus
membrane light
protein structure
sense organ
cell membrane
cell receptor
cells receptors
human cell receptors
immune cells
immune defense
malignant cells
photo receptors
receptors cells
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