growth factor icon, black sign with editable strokes, concept

growth factor structure protein molecule science molecular scientific disease peptide cell health atoms acid model amino polypeptide receptor polymer egfr fibroblast epidermal tumor human cancer erlotinib cetuximab panitumumab egf collagen concept skin chemistry chemical colon endothelial gefitinib icotinib medicine lung pdb2kv4 biochemistry osimertinib afatinib icon vector sign