Peptic Ulcer - An open sore that develops on the inner lining of the stomach or upper small intestine.⏎
Recombinant Technology - The process that allows technicians to create artificial pieces of DNA in which two or more DNA sequences, often from separate organisms, are combined in ways that would not normally occur naturally.⏎
Respiratory Tract - The part of the anatomy that has to do with the passage of air and includes the nose, larynx, trachea, and lungs.⏎
Reproduction - The process by which parent organisms create new offspring by either sexual or asexual means.⏎