Category A Agents - A class of biological agents that the Centers for Disease Control and Prevention views as posing the highest priority risk to U.S. national security.⏎
Cell - The smallest unit of living matter capable of functioning independently.⏎
Biological Agent (Terrorism) - A bacterium, virus, or other biological toxin used in bioterrorism or biological warfare.⏎
Cell Membrane - A semipermeable barrier that separates the interior of a cell from the external environment.⏎
Centers for Disease Control and Prevention (CDC) - A federal agency under the U.S. Department of Health and Human Services that works with partners across the United States to ensure public health—through health promotion; prevention of disease, injury, and disability; and preparedness for new health threats.⏎