The guinea pig or cavy, a rodent living wild in the Andean region of South America, but domesticated and used as a laboratory animal. Numerous mutants are known, affecting hair color and texture. Immune response genes were discovered in this species. See Classification, Chordata, Mammalia, Rodentia; Chronology, 1963, Levine, Ojia, and Benacerraf.
Subjects: Genetics and Genomics.