Killer and helper T cell receptors, illustration - stock illustration
Illustration of a killer T cell with a T cell receptor and CD8 (cluster of differentiation 8) co-receptor on its surface and a helper T cell with a T cell receptor and a CD4 (cluster of differentiation 4) co-receptor on its surface. T cells, or T lymphocytes, are a type of white blood cell and one of the components of the body's immune system. Their receptors and co-receptors recognise specific sites (antigens) on the surface of cells or pathogens and bind to them. Helper T cells then signal for other immune system cells to eliminate the cell. Killer, or cytotoxic, T cells eliminate the cell themselves by releasing a protein that forms pores in the cell's membrane. For an unlabelled version of this image see F044/5946

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Categories:
- Art Product,
- Assistance,
- Biology,
- Blood,
- Blue Background,
- Built Structure,
- Color Image,
- Digitally Generated Image,
- Glycoprotein,
- Helper-T-Cell,
- Horizontal,
- Illustration,
- Immune System,
- Immunology,
- Killer-T-Cell,
- Label,
- Model - Object,
- Molecular Structure,
- Molecule,
- No People,
- Protein,
- Receptor,
- Signal transduction,
- T-Cell,
- Text,
- Three Dimensional,