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Antibody model. IgG isotype. Surface representation with added supports for the 'hinge region'. Model approx 12x12x6cm.
Antibodies recognize foreign molecules in the blood as part of the immune system that protects us from infection. This structure includes an entire antibody.
Based on PDB: 1IGT http://www.rcsb.org/pdb/explore.do?structureId=1IGT