EGFR and squamous cell carcinoma: Moreover, EGFR in the whole membrane of three tumor cell lines (1 × 106 each cell line/mL) was detected with both sensing platforms, confirming that A431 cells collected from epidermoid carcinoma expressed the highest level of EGFR, followed by SW480 cells (from colon adenocarcinoma), SW620 cells (from a lymph node metastasis), and HEK293 cells (non-neoplastic control cell line) [62].