Peptic Ulcer - An open sore that develops on the inner lining of the stomach or upper small intestine.⏎
Replication - The process of producing a copy of a strand of DNA.⏎
Parasitism - A close relationship between two organisms in which one organism, the parasite, benefits at the expense of the host organism.⏎
Plasmid - A ring of DNA usually found in bacteria that is separate from and can replicate independently from DNA in a chromosome and can provide bacteria with some advantages, such as antibiotic resistance.⏎