Tumour necrosis factor-alpha
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Tumour necrosis factor-alpha
Tumour necrosis factor-alpha (TNF-alpha), computer model. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), oxygen (red) and nitrogen (blue). Disulphide bridges are yellow. This protein generally exists as a trimer (a molecule consisting of 3 identical smaller molecules, seen here). It is released by white blood cells, mainly macrophages, during inflammatory immune responses, and acts as a signalling molecule. Its release is triggered by injury or bacterial endotoxins. One of its actions is to kill tumour cells, hence its name. TNF-alpha is also involved in a number of inflammatory illnesses, including rheumatoid arthritis, psoriasis and Crohns disease
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6279959
© DR MARK J. WINTER/SCIENCE PHOTO LIBRARY
Ball And Stick Computer Model Cytokine Defense Immune Response Immune System Psoriasis Rheumatoid Arthritis Structural Trimer Tumor Bio Chemistry Computer Artwork Molecular Protein
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