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.⏎
Autoimmune Disease - An umbrella term for a range of conditions in which the immune system mistakenly attacks healthy tissue in the body.⏎
Bioweapon - A bacterium, virus, or other biological toxin used in bioterrorism or biological warfare.⏎
Chromosome - An organized structure of DNA and proteins within the nucleus of a cell that contains many genes.⏎