E07 Aptamer, targeting the human epidermal growth factor receptor (hEGFR), competes with epidermal growth factor (EGF) for binding to a unique epitope on EGFR. This aptamer not only binds to EGFR-expressing cells but also inhibits receptor autophosphorylation and thwarts tumor cell proliferation in three-dimensional matrices, positioning it as a useful tool for tumor disease research [1].