的确Zn是细胞毒性有争议的金属元素，但其进入细胞中的量过大或者以纳米颗

It is true that Zn is a controversial metal element with cytotoxicity, but the amount of Zn entering the cell is too large or the toxicity of entering the cell with nanoparticles as a carrier may increase. For example, Adamson et al. showed that zn is a particulate matter in the atmosphere. As an important toxic element, we have detected that the cd content in the model particulate matter and PM2.5 is much lower than the zn content, which may also be the reason for the weaker toxicity performance of cd.

It is true that Zn is a controversial metal element of cytotoxicity, but its entry into the cell is too large or nanoparticles as a carrier into the cell toxicity may increase, such as Adamson et al. showed that zn is an important toxic element in atmospheric particles, we detected model particulate matter and PM2.5 in the cd content is much lower than zn content, which may also be the cause of cd toxicity performance is weak.

It is true that Zn is a controversial metal element in cytotoxicity, but its toxicity may increase if the amount of Zn entering cells is too large or nano particles are used as carriers. For example, Adamson et al. Showed that Zn is an important toxic element in atmospheric particles. We detected that the content of Cd in model particles and PM2.5 is much lower than that of Zn, which may also be the toxicity of CD The reason of weak performance.<br>