If they inform you that the page has been removed, you can confirm this by using an HTTP response testing tool like the Live HTTP Headers add-on for the Firefox browser.

如果他们通知你网页已经被删除，你可以通过使用Live HTTP Headers这个Firefox浏览器插件检查网页返回状态。

youdao

Availability of a gene test to predict response could speed testing of the drug for less-advanced cases.

FORBES: Gene Predicts Cancer Drug Effectiveness

So I think that -- again, that was in direct response to the testing of a long-range missile in late March, early April -- I forget the exact date.

WHITEHOUSE: Press Briefing

In order to finish the trial quickly, Glaxo is testing the response generated by the immune system due to the vaccine.

FORBES: Glaxo Goes Head-To-Head With Merck