Toll-like receptor 4 (TLR4, extracellular domain) bound to lipopolysaccharide (LPS, not shown) and MD-2.

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Toll-like receptor 4 (TLR4, extracellular domain) bound to lipopolysaccharide (LPS, not shown) and MD-2. 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. Cartoon representation with secondary structure coloring (green sheets, red helices).

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Size: 8000px × 5627px
Photo credit: © molekuul.be / Alamy / Afripics
License: Royalty Free
Model Released: No

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