1.   Before he finds them, Fluke outwits the dogcatcher, befriends a homeless woman and eludes a scientist who tries to test chemicals on him.

2.   A definitive cause for the epidemic has eluded scientists, although diet, childhood infections and exposure to allergens have all been cited.

3.   A cure has eluded scientists for decades.

4.   But if the WIMPs are out there, they seem to have eluded scientists so far.

5.   But the exact dynamics of such shape-shifting have eluded scientists.

6.   Even though wasting is considered a serious illness in and of itself, the mechanism has eluded scientists.

7.   For reasons that elude scientists, some people are more attractive to mosquitos than others.

8.   Physicists at the Fermi National Laboratory have isolated the top quark, the last of three pairs of basic subatomic particles that had eluded scientists for almost two decades.