Still,a theory exists that amyloid plaques are an effect of the disease, not the cause.

VOA: special.2009.09.15

These are areas like Afghanistan where more than one kind of polio virus exists.

VOA: special.2010.01.18

"In one of those speeches, I declared that I had no purpose directly or indirectly to interfere with the institution of slavery in the states where it exists.

VOA: special.2009.07.30

and that government exists only with the permission of the governed.

VOA: special.2010.07.22

I believe that is true. If you make the effort to do the best of what you are capable, trying to improve the situation that exists for you, I think that is success and I do not think others can judge that."

VOA: special.2010.06.10

Valeriy Gabisov of the independent Civil Rights Committee noted that corruption exists everywhere and can at best be minimized, not eliminated.

VOA: standard.2009.05.15

It also exists in Southeast Asian nations and on the Japanese island of Okinawa.

VOA: standard.2010.03.22

In one of Gaza's markets, there are few signs that a blockade even exists.

VOA: standard.2010.06.16