igg2a monoclonal antibody (immunoglobulin). many biotech drugs are antibodies. molecular surface model. heavy chains colored blue

pdb1igt antibody immunoglobulin igg igg2a 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 science scientific disease health molecular model