1.   But the scientists also will consider whether additional wheat fields should be quarantined and destroyed to contain the spores.

2.   When first grown, the top of the fungus is coated in a black sticky jelly containing spores.

3.   Could someone have dug up soil that contained spores from a cow that died of anthrax many years ago?

4.   In some situations powders containing live spores of an insect-killing fungus, Metarhizium anisopliae, may be useful, although they are still being tested.

5.   Meanwhile, the search continues for letters that may contain anthrax spores.

6.   Most of the time, these cases occur in people who handle animal hides or wool that contained anthrax spores.

7.   Police departments nationwide have been inundated with calls from residents worried about letters or other materials containing anthrax spores.

8.   Preliminary tests have indicated that the powder sent to The Times did not contain anthrax spores.

9.   Should a person inadvertently open a letter containing anthrax spores, he or she can prevent the onset of disease by promptly seeking medical treatment.