Prion - A causative agent of infectious disease that is composed primarily of protein.⏎
Reproduction - The process by which parent organisms create new offspring by either sexual or asexual means.⏎
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.⏎
Nanometer - A unit of length equal to one one-billionth (1 x 10-9) of a meter.⏎
Reservoir - An organism in which a parasite that is pathogenic for some other organism lives and reproduces without harming its host.⏎