These obstruct the flow of blood and fluids in the kidneys and can ultimately lead to kidney failure, coma and death.

This triggers a cascade of events that leads to clot enlargement, which may quickly obstruct the flow of blood.

Plus, we accept only full-page advertisements and place them carefully, so you'll never find an ad obstructing the flow of an article as you read.

But if it misdirects investment resources to where they are less productive, it reduces production in the real economy by obstructing the flow of credit altogether.

Also, a family friend, aged just 12, died recently from hypertrophic cardiomyopathy, an enlargement of the left ventricle that obstructs the flow of blood and can cause cardiac arrest.