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Need 2 sentences summarizing research.Scientists engineered a single‑cell‑level device that traps circulating tumor cells (CTCs) in microfluidic chambers, then uses CRISPR‑based gene editing to knock out the
EGFR
driver mutation within each captured cell. The edited CTCs are immediately expanded into organoids for rapid drug testing, cutting turnaround time from weeks to days and enabling personalized therapy selection with unprecedented speed.