21.  Since SIDS research has been plagued by false leads in the search for a biological cause, Kinney cautioned that the hypothesis needs confirmation and considerably more research.

22.  Some of the disappointment came from chasing false leads.

23.  Some false leads were whittled away Tuesday, including earlier suspicions that Nguyen might have held a second job at a restaurant.

24.  Some observers recalled that another recent high-profile case, the Oklahoma City bombing, generated many false leads.

25.  Sorting truth from rumor, evidence from false leads, has been complicated by Internet high jinks.

26.  The confirmation by four international scientific teams seems likely to put the search for schizophrenia genes on a more solid footing, after years of false leads.

27.  The Gardner theft has a history of false leads and dead ends, and museum officials are skeptical that their ordeal is about to end.

28.  The implication is that even a slow, detailed, comprehensive search from Earth would be mostly a wasteland of late nights, false leads and frustration.

29.  The signs yielded nothing but false leads, ditto the classifieds.

30.  There were false leads, one of them frightening, others just depressing.