The host response is the defense mechanism of the host against exogenous microorganisms.

In Dallas and Houston, the dominant architectural forms are glass office towers and air-conditioned shopping malls that owe more to the Bauhaus than to the North Forty.

many-daughtered

Energy has seldom been found where we need it when we want it. Ancient nomads, wishing to ward off the evening chill and enjoy a meal around a campfire, had to collect wood and then spend time and effort coaxing the heat of friction out from between sticks to kindle a flame.