1.   If someone scraped off only one microscopic spore, that alone could serve as a starter culture, he said.

2.   Once it arrives the microscopic spore is eaten by tiny, threadlike worms, tubifex, that live in all streams.

3.   The problem is not killing the microscopic spores.

4.   The announcement was the second jolt in as many days to a nation struggling to contain the bioterrorism being spread by a microscopic spore.

5.   The difference is whether the microscopic spores enter the skin through a cut or are inhaled into the lungs.

6.   The only difference is whether the microscopic spores enter the skin through a cut or are inhaled into the lungs.