Overwhelming obstacles block the formation of new companies.
Most sleeping pills are known to block the formation of memories during their use, creating amnesia.
I am appalled by the efforts of Tom DeLay, the House majority leader, to block the formation of a Palestinian state.
First among these are well-tolerated drugs known as ACE inhibitors, which block the formation of a neurohormone that constricts arteries and causes arterial dysfunction.
XL184 is believed to block the formation of blood vessels that feed tumors and also inhibits a protein called MET that helps spur tumor growth.
ACE inhibitors, which block the formation of angiotensin II, are used in treating hypertension, which is produced by excessive constriction of the small arteries.
And it is easier to block the formation of amyloid beta — two key enzymes make it, and stopping either one can work.
Therefore, the fibrillar smectic mesophase seems to block the formation of the lamellar crystal.
Just as the animals were anticipating a new shock, the scientists injected a chemical into their brains to block the formation of new memories.
America has expressed concern about what it called "divisive rhetoric" during the campaign, including a pledge to block the formation of a Palestinian state.
Endostatin is one of the so-called angiogenesis inhibitors, a group of much-touted drugs that block the formation of new blood vessels that tumors need for growth.
