Toll-like receptor 4 (TLR4, extracellular domain, green) bound to lipopolysaccharide (LPS, orange) and MD-2 (red-brown).

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Toll-like receptor 4 (TLR4, extracellular domain, green) bound to lipopolysaccharide (LPS, orange) and MD-2 (red-brown). Involved in activating the innate immune system upon detecting LPS, a component of many gram-negative bacteria. 3D rendering based on protein data bank entry 3fxi. Atoms shown as color-coded spheres.

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Size: 4096px × 3028px
Photo credit: © molekuul.be / Alamy / Afripics
License: Royalty Free
Model Released: No

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