Peptic Ulcer - An open sore that develops on the inner lining of the stomach or upper small intestine.⏎
Outbreak - An unexpected increase in the incidence of a particular disease over a given time period and geographic range. A general term that may refer either to an epidemic or a pandemic.⏎
Replication - The process of producing a copy of a strand of DNA.⏎
Organism - A living being that can reproduce, grow, react to external stimuli, and maintain its internal equilibrium.⏎
Pathogen - A biological agent that causes disease.⏎