In these cases, treatments based on blocking the action of the hormone may be offered.
Ajoene, the disulfide that naturally occurs in garlic, appears to work by blocking the action of glutathione.
They then tested drugs to see which might be effective in blocking the action of this protein.
Russia's role in forging peace is key because Moscow has confounded Western and Arab nations by blocking tough action in the U.N.
The new drug, called a CETP inhibitor, works by blocking the action of a protein which lowers levels of "good" cholesterol in the body.
They found a particular piece on the surface of the bacteria, which they have called SpyCEP, is responsible for blocking the action of IL-8.
The new class of drugs - DFSAs - permanently bind to the enzyme, blocking its action and stopping it from spreading further, the journal Science reported.
Have these countries played a role in blocking stronger Security Council action that might have brought about sanctions?
Additionally, many actors find that remembering lines is much easier when tied to the stage action, or blocking.
They are also adept at direct action, sometimes even blocking the streets by dumping tons of produce or manure.
And the Baggies came agonisingly close to an equaliser when Miller sprung the offside strap and forced Almunia into action again, with Djourou blocking Robinson's follow-up close to his own goalline.
The problem America faces, however, is that it has little international support for military action to topple Mr Hussein even while he is blocking UN weapons inspectors.
Incoming Republicans leaders say they plan rapid action, ranging from dragging the FCC to the Hill for grilling, to blocking its neutrality order via the Congressional Review Act's "resolution of disapproval" provision.
Nor should Mr Putin's continued blocking of UN Security Council resolutions authorising intervention in Syria be treated as an insurmountable bar to action, any more than it was in Kosovo in 1999.
ECONOMIST: The West is getting tougher with Russia. So it should
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