chimera

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chimera

 [ki-me´rah]
an organism whose body contains different cell populations derived from different zygotes of the same or different species, occurring spontaneously or produced artificially.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

chi·me·ra

(kī-mēr'ă, ki-),
1. In experimental embryology, the individual produced by grafting an embryonic part of one animal onto the embryo of another, either of the same or of another species.
2. An organism that has received a transplant of genetically and immunologically different tissue, such as bone marrow.
3. Dizygotic twins that exchange immunologically distinct types of erythrocytes.
4. A protein fusion in which two different proteins are linked through peptide bonds; usually genetically engineered. Chimeric antibodies may have the Fab fragment from one species fused with the Fc fragment from another.
5. Any macromolecule fusion formed by two or more macromolecules from different species or from different genes.
[L. Chimaera, G. Chimaira, mythic monster (lit. a she-goat)]
Farlex Partner Medical Dictionary © Farlex 2012

chimera

also

chimaera

(kī-mîr′ə, kĭ-)
n.
1.
a. An organism, organ, or part consisting of two or more tissues of different genetic composition, produced as a result of organ transplant, grafting, or genetic engineering.
b. A gene or protein consisting of parts from two different genes or proteins that are normally distinct, sometimes derived from two different species.
2. An individual who has received a transplant of genetically and immunologically different tissue.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

chimera

Any individual organism or molecule derived from 2 or more species.
 
Embryology
An organism that results when an embryonic part of one organism is grafted onto another.

Genetics
An organism with 2 or more cell lines, genotypes or karyotypes descended from at least 2 zygotes. Chimeras are very rare, only occur in twins and result from chorionic vascular anastomoses, transplantations or double fertilisations and subsequent participation of both fertilised meiotic products in one developing embryo; all hermaphrodites should be karyotyped to evaluate possible chimerism.

Molecular biology
(1) An animal formed from two different embryonic sources. In mouse genetics, targeted mutations produced in embryonic stem cells are recovered by breeding chimeric mice, resulting from the mixture of embryonic stem cells with a genetically distinct blastocyst.
(2) A clone containing genomic DNA from nonadjacent genomic segments or cDNA from two different mRNAs.

Transplantation
The term chimera was once used for a person who had received transplanted tissue—e.g., bone marrow surviving in a recipient.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

chi·me·ra

(kī-mēr'ă)
1. The individual produced by grafting an embryonic part of one animal onto the embryo of another, either of the same or of another species.
2. An organism that has received a transplant of genetically and immunologically different tissue, such as bone marrow.
3. Dizygotic twins that have immunologically distinct types of erythrocytes.
4. A protein fusion in which two different proteins, usually from different species, are linked through peptide bonds; usually genetically engineered. Chimeric antibodies may have the Fab fragment from one species fused with the Fc fragment from another.
5. Any macromolecule fusion formed by two or more macromolecules from different species or from different genes.
[L. Chimaera, G. Chimaira, mythic monster (lit. a she-goat)]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

chimera

An organism that contains a mixture of genetically different cells derived from more than one ZYGOTE. A chimera may, for instance, occur as a result of fertilization by more than one spermatozoon; fusion of two zygotes; an ALLOGENEIC bone marrow graft; cell exchange between dizygotic twin fetuses; or combination of portions of embryos of different species. Compare MOSAICISM. The term derives from the name of a mythical monster with a lion's head, a goat's body, and a serpent's tail.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Une chimere se compose donc << d'un ensemble d'indices visuels oo ce qui est donne a voir appelle necessairement l'interpretation de l'implicite >> (Severi, 2007, p.
Overall, our estimates indicate that under the RCP4.5 emissions scenario and the reference ragweed invasion scenario, the number of people sensitized to ragweed in Europe would increase from approximately 33 million (27 million and 38 million based on CHIMERE and WRF/RegCM, respectively) at baseline to 77 million (68 million and 86 million based on CHIMERE and WRF/RegCM, respectively) in 2041-2060 owing to higher pollen counts affecting a larger spatial area.
Le chapitre 1, dans sa perfection condensee, fait connaitre a quel point le jeune homme n'a rien d'un Rastignac, meme si tous les deux nourrissent des chimeres. Dans L'Education sentimental en roman d'education a rebours ?, on lit qu'autant Rastignac est tire vers le mouvement et l'esperance de la realisation, autant Frederic est deja decale de la vraie temporalite : << Frederic pensait a la chambre qu'il occuperait la-bas, au plan d'un drame, a des sujets de tableaux, a des passions futures.
During Aristide's last two years in power, groups of sometimes-armed young men nicknamed chimere ("monster"), who got checks from government offices regularly, threatened anti-government marchers, journalists and even government officials not deemed loyal enough.
As one recent commentary has argued, Brancusi's Chimera is very much of its time: 'la Chimere de Brancusi appartient en tout 6tat de cause au contexte des figurations de Dada, dons lequel elle est rapprocher d'autres chimeres--comme, pour example, la Jeune Chimere de Max Ernst de 1920'.
La gang: une chimere a apprivoiser: marginalite et transnationalite chez les jeunes quebecois d'origine afro-antillaise.
Dressed in a black chimere, a white rochet and a purple cassock, the choir dress of Anglican bishops, he had stood, knelt and sat throughout the ancient ceremony presided over by the Archbishop of York Dr David Hope.
* Si la modification a ete obtenue grace a des techniques de recombinaison de l'ADN fournir une carte de chaque gene chimere; pour chaque gene chimere en indiquer les sources et les decrire en details.
Laforgue nomme la "chimere." C'est 1'exploration des fonctionnements textuels de cette configuration que 1'ouvrage, distribue en trois parties, est dedie.
La Chimere de Zeuxis: Portrait poetique et portrait peint en France et en Italie a la Renaissance.
Though no one claimed responsibility for the blasts, the opposition said the Chimere, a faction of Lavalas extremists, set them off.