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.

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)]

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.

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.

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)]

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.
References in periodicals archive ?
Muscle attachment areas in the Silurian bellerophontacean gastropods Bellerophon scaber (Perner) and Bubovicus tardus (Barrande in Perner).
Both Melikertes/Palaimon and Bellerophon and Pegasus at the Peirene Fountain constituted part of Corinth's mythical history, which functioned to help shape the Corinthians' civic identity Commemoration of these mythical stories through religious ceremonies and festivals was a part of history-keeping in Corinth.
Flextronics is proud to collaborate and provide innovative manufacturing solutions to Bellerophon for its next- generation, nitric oxide delivery device--INOpulse Mark2," said Mark Kemp, President of Flextronics Medical.
(77) The fourth allusion we have already attended to above in our discussion of "lameness", the comic pair of Pegasus and Bellerophon in the in Isiac anteludia at 11.8.4:
At the end of the scene he promises Bellerophon a ride to Argos, but they appear to leave the stage again on foot.
After all, when Bellerophon finally confronts the beast, he finds "in its abominable claws, the remnant of an unfortunate lamb--or possibly (but I hate to think so) it was a dear little boy--which its three mouths had been gnawing, before two of them fell asleep!" (7:161).
Supposedly, Proitos sent something of this sort along with Bellerophon.
In 1875 Bradley brought out The New Minnesinger as Arran Leigh, and in 1881 the two women together, as collaborators for the first time, had published Bellerophon as Arran and Isla Leigh.
(9) A mere sixteen years after Swinburne produced Atalanta, Bradley and Cooper published Bellerophon (1881).
What distinctive mission was conducted by HMS Bellerophon?
(Endymion was always shown nude because he was a model of classical male beauty.) Biblical figures might also be depicted alongside those from classical myths Jesus alongside Bellerophon and the chimera, for example.