11.   This week, Bush administration officials have tried to reassure a public that they fear is growing overly concerned about a bioterrorism threat.

12.   Meanwhile, the bioterrorism threat has placed microbiologists on center stage.

13.   Terrorism experts are warning that local and state authorities may not have the training or resources to respond to bioterrorism threats that could produce thousands of casualties.

14.   The move came after sending samples of several of its medicines to the government for testing as potential candidates to target bioterrorism threats.

15.   With the U.S. bioterrorism threat in its second month, scores of lawmakers were allowed back into their quarters in the Longworth House Office Building.