| chi | chimera |
|---|
| radiation chimera | An organism whose body contains cell populations of different genotypes as a result of the injection of foreign cells into it after it has received sufficient ionizing radiation to destroy the mature host cells which would otherwise reject the injected cells. (12 Dec 1998) |
|---|---|
| chimera | <cell biology> Organism composed of two genetically distinct types of cells. Can be formed by the fusion of two early blastula stage embryos or by the reconstitution of the bone marrow in an irradiated recipient or by somatic segregation. (05 Jan 1998) |
| transplantation chimera | An organism that, as a result of transplantation of donor genetic material, consists of two or more cell lines descended from at least two zygotes. This state results in the induction of donor-specific transplantation tolerance. (12 Dec 1998) |
| heterologous | <molecular biology> Derived from the tissues or DNA of a different species. Compare: autologous, homologous. (18 Nov 1997) |
| heterologous antiserum | An antiserum that reacts with (e.g., agglutinates) certain microorganisms or other complexes of antigens, even though the antiserum was produced by means of stimulation with a different microorganism or antigenic material. See: homologous antiserum. (05 Mar 2000) |
| heterologous desensitization | Stimulation by one agonist which leads to a broad pattern of unresponsiveness to further stimulation by a variety of other agonists. (05 Mar 2000) |
| heterologous graft | <surgery> A surgical graft of tissue from one species onto or into individuals of unlike species, genus or family. Also know as a heteroplastic graft. See: xenotransplantation. (11 May 1997) |
| heterologous insemination | Artificial insemination with semen from a donor who is not the woman's husband. Synonym: donor insemination. Homologous insemination, artificial insemination with the husband's semen. (05 Mar 2000) |
| heterologous protein | A protein that differs from any protein normally found in the organism in question. Synonym: heterologous protein. (05 Mar 2000) |
| heterologous serotype | An antibody that was induced by one antigen and reacts with another antigen. (05 Mar 2000) |
| heterologous stimulus | A stimulus that acts upon any part of the sensory apparatus or nerve tract. (05 Mar 2000) |
| heterologous tumour | A tumour composed of a tissue unlike that from which it springs. (05 Mar 2000) |
| heterologous twins | Dizygotic twins are siblings who have shared a common uterine environment. They are due to fertilization of two different ova by different sperm. Dizygotic twins are also called fraternal twins. (12 Dec 1998) |
| insemination, artificial, heterologous | Human artificial insemination in which the semen used is that of a man other than the woman's husband. (12 Dec 1998) |
| transplantation, heterologous | Transplantation between animals of different species. (12 Dec 1998) |
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