The Jets' run defense, a persistent weakness in recent years, is also ranked ninth.

Moody's added that persistent weakness in the financial industry had made Japan more vulnerable.

Her husband, a former machine operator, said he had to quit working recently because of persistent weakness and nausea.

The index still reflects persistent weakness in Germany's current condition.

The cut in spending that has resulted is believed to be one reason for the economy's persistent weakness.

Xerox may also benefit from a persistent weakness in copier technology.

And that led to a persistent weakness in the economy.

It reveals a persistent weakness in American manufacturing industries, like autos.

Despite persistent weakness and anemia from vaginal bleeding, she delayed further tests.

But he said corporate profits remain under "unrelenting" pressure, a factor in the persistent weakness of the stock market.