1.   A key chemical messenger in this process is leptin, a recently discovered hormone made by fat cells.

2.   A second problem emerged with the need to construct lightweight vessels to contain the recently discovered gas helium.

3.   And the recently discovered structure of atoms gave them the idea that they could make helium out of hydrogen.

4.   This has galleries on two levels, the lower one for the recently discovered paintings, the upper one for temporary exhibitions.

5.   The company also shared in new output from the Angus field and has an interest in the recently discovered Fife field.

6.   Among the viruses ruled out were recently discovered strains of the Hanta virus, which has caused acute respiratory illness in the United States.

7.   Among them was a recently discovered class of stealth star systems called low-surface brightness galaxies.

8.   As a major AIDS meeting ended here, researchers expressed hope Thursday that a recently discovered molecule might eventually lead to new ways to prevent the infection.

9.   Bergstrom pored over some of the other recently discovered items, bringing up one bag with a pocket watch, several with wallets, several more with car keys.