igg1 monoclonal antibody (immunoglobulin), 3d rendering. many biotech drugs are antibodies. atoms are shown as color-coded spheres

pdb1igy antibody immunoglobulin igg igg1 antibodies fab antigen epitope immune system response microbe bacteria virus blood biotech biotechnology drug biological diagnosis diagnostic therapeutic vaccine abciximab adalimumab alemtuzumab basiliximab belimumab bevacizumab cetuximab eculizumab efalizumab gemtuzumab infliximab ranibizumab trastuzumab rituximab immunotherapy elisa structure peptide protein 3d rendering amino acid molecule polypeptide polymer atoms