1.   That indicates that the ancient disease was, like Ebola, spread by blood, saliva or feces, rather than by airborne microbes.

2.   The field lab can confirm an airborne microbe attack in as little as five hours, said Los Alamos bioscience division leader Jill Trewhella.

3.   The sickness moved from room to room, in a pattern that suggested it was caused by an airborne microbe.

4.   The sickness moved from room to room, which suggested it was caused by an airborne microbe.

5.   The workers who got sick worked down-wind from the blowers, explaining how they could have come in contact with airborne microbes.