Biological reactivity of different crystalline forms of titanium dioxide in vitro and in vivo.
比较了金红石和锐钛矿两种晶型二氧化钛在体外和体内的生物反应性，发现两者活性都很低，远低于α-石英，且含微量镍或铬的金红石活性与纯金红石相似。
The biological reactivity of two crystalline forms of titanium dioxide, rutile and anatase, has been compared in in vitro and in vivo assays. Rutile and anatase induced similar effects, and both had a very low biological activity in comparison to alpha-quartz. Rutile samples containing trace amounts of nickel or chromium had an activity similar to that of pure rutile.