epidermal growth factor , egf protein molecule. it is stimulates cell growth and differentiation. 3d rendering pdb 2kv4

2kv4 afatinib amino atom brigatinib cell cellular cetuximab chemical chemistry differentiation egf egfr epidermal erlotinib factor growth hormone icotinib illustration inhibitor molecular molecule osimertinib panitumumab peptide polypeptide protein receptor structure