EPCAM and neoplasm: leveraged the freedom of 3D printing design and strived to improve the capture efficiency of tumor cells of a microfluidic device fabricated via inkjet printing (Figure 6b).[509] The porous structure with a high surface area was produced by multijet printing, followed by surface modification to coat polydopamine and anti‐EpCAM antibodies to immobilize circulating tumor cells (CTCs) at the molecular level.