“纳米针”的针尖只有人类头发的千分之一粗 ,用它捅一个活细胞 ,会引起细胞短暂颤动。纳米微传感器从细胞抽出 ,就能探测出导致癌症的 DNA早期损坏的信号。。为模拟对致癌物的接触 ,细胞已用苯并芘(Ba P)的代谢物培养。Ba P是熟知的引起癌症的环境因子 ,经常在污染的城市大气 “Nano-needle,” the tip of human hair is only one-thousandth thick, use it to poke a living cell, can cause short-term cell fibrillation. Nano-sensors are pulled from the cell to detect signals that cause early damage to the DNA of the cancer. . To simulate exposure to carcinogens, cells have been cultured with metabolites of benzopyrene (BaP). Ba P is a well-known environmental factor that causes cancer, often in the polluted urban atmosphere