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Chimera.

[ki-mir'a]

From the Greek Khimaira, Latin Chimaera: she-goat. In Greek mythology: a composite creature with the body and head of a lion, a goat's head rising from its back, and a serpent's tail. In science: an individual organism whose body contains cell populations derived from different zygotes, of the same or different species. Each population of cells keeps its own character, and the resulting animal is a mixture of tissues. Chimera also refers to a substance created from proteins or genes of 2 species, as by genetic engineering. Chimerism is rare in humans: [approximately equal to] 40 cases have been reported.

Source: Dorland's illustrated medical dictionary, 31st edition. Philadelphia: Saunders: 2007: http://www.merriam- webster.com: http://www.medicinenet.com/script/main/hp.asp

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Title Annotation:etymologia
Publication:Emerging Infectious Diseases
Article Type:Brief article
Geographic Code:1USA
Date:Nov 1, 2008
Words:124
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