25.4 MB (2.2 MB compressed)
3349 x 2654 pixels
28.4 x 22.4 cm ⏐ 11.2 x 8.8 in (300dpi)
RICCARDO CASSIANI-INGONI / SCIENCE PHOTO LIBRARY RICCARDO CASSIANI-INGONI / SCIENCE PHOTO LIBRARY
Immune response. Fluorescent light micrograph of T lymphocytes (red) surrounding glial cells. Glial cells are support cells for neurons (nerve cells). T lymphocytes are a type of white blood cell and one of the components of the body's immune system. They recognise a specific site (antigen) on the surface of damaged cells or pathogens and bind to it. Some T lymphocytes then signal for other immune system cells to eliminate the cell. Cytotoxic T lymphocytes eliminate the cell themselves by releasing a protein that forms pores in the cell's membrane.
Model release not required. Property release not required.