How much of whatever deadly biogenic agent created by the Rhaaxans did each missile contain?

By now, I was no stranger to this deadly agent.

So the mobile factories, in theory at least, could make quantities of deadly agents up to thousands of times greater.

Researchers working with deadly biological agents and toxins would have to register with the federal government.

We have drinking water and a dense population that shouldn't be exposed to deadly agents.

This side of the pacific, she is the meanest, deadliest and sexiest secret agent.

The vaccine is meant to protect against an attack with anthrax, one of the deadliest biological agents ever turned into a weapon.

The bill would have provided tax credits to private sector companies working on vaccines for some of the world's most deadly infectious agents.

Until 1996, it was relatively easy for foreign countries to obtain deadly biological agents from commercial suppliers in the United States.

It was a vast network of secret laboratories, each focused on a different deadly agent.