Without this balance, a body's immune system will not have the desired response when faced with infection. These findings could aid the development and production of vaccines and lead to further research on how the body fights specific infections, such as HIV.

The eagle may soar; beavers build dams.

There must be some great truth underlying the instinct for worship.

The eyes are the amulets of the mind.

Democracy in Yemen did not stop, instead it is in a continuous development, there is no other way to follow rather than democracy, it is our national way for building up our country, it was not imposed on us by others.

It may be asserted without scruple, that no otherclass of dependants have had their character so entirely distorted from its natural proportions by their relations with their masters.

In adversity man is saved by hope.