Bacteria - A large group of unicellular microorganisms that lack a cell nucleus. Some bacteria are pathogenic and harmful to humans, some have no effect at all on humans, and some are beneficial.⏎
Cancer - A class of diseases in which abnormal cells divide without control and are able to invade healthy tissues in various parts of the body.⏎
Bacilli - A taxonomic class of bacteria.⏎
Bioterrorism - The deliberate release of a virus, bacterium, or other biological agent to cause illness and death in people, animals, or plants.⏎
Chromosome - An organized structure of DNA and proteins within the nucleus of a cell that contains many genes.⏎