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Graft-versus-host disease
Graft-versus-host disease A condition that occurs after tissue transplantation in which the donor-derived T cells attack the host's tissues.
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Condition
The term "condition" has a number of biomedical meanings including the following: 1.An unhealthy state, such as in "this is a progressive condition." 2.A state of fitness, such as "getting into condition." 3.Something that is essential to the occurrence of something else; essentially a "precondition." 4.As a verb: to cause a change in something so that a response that was previously associated with a certain stimulus becomes associated with another stimulus; to condition a person, as in behavioral conditioning.
Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.
Transplantation
To transfer (tissue or an organ) from one body or body part to another.
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Grafenberg spot
A zone of erotically sensitive glandular tissue, palpable at finger depth through the anterior wall of the vagina during sexual arousal, that corresponds to the prostate gland in the male, and that may release fluid through the urethra at the climax of orgasm.
Graft
A piece of skin or other tissue used as a transplant.
Graft Versus Host Disease
A common complication of allogeneic blood and marrow transplantation where there is a reaction of the donated hematopoietic progenitor cells against the recipient's own tissue.
Graft versus host reaction (GVH)
The pathologic consequences of a response initiated by transplanted immunocompetent T lymphocytes into an allogeneic, immunologically incompetent host. The host is unable to reject the grafted T cells and becomes their target.
Grafton Base Hospital
The Grafton Base Hospital is a hospital in Grafton, New South Wales, Australia.
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Gene expression
The process by which RNA and proteins are made from the instructions encoded in genes. Alterations in gene expression change the function of the cell, tissue, organ, or whole organism and sometimes result in observable characteristics associated with a particular gene.
Genome
The complete genetic material of an organism.
Germ cell
Or germline cell. A sperm or egg, or a cell that can develop into a sperm or egg; all other body cells are called somatic cells.
Germline cell
Or germ cell. A sperm or egg, or a cell that can develop into a sperm or egg; all other body cells are called somatic cells.
Genomic imprinting
See imprinting.
Graft-versus-host disease
Germinal vesicle transfer
Or oocyte nuclear transfer. An assisted reproductive technique involving transfer of an egg nucleus (usually from a woman with age-related infertility or mitochondrial disease) into a healthy donor egg whose nucleus has been removed. This reconstituted egg can then be fertilized by a sperm in vitro. This technique may restore fertility to older women or to prevent the passing of mitochondrial disease to offspring.
Gamete intra-Fallopian transfer
A treatment for infertility in which sperm and surgically removed eggs areinserted into the Fallopian tube at the same time, in the hope that the egg will be fertilized and implant.
Gamete intra-Fallopian tube transfer
An infertility treatment similar to IVF that involves removing eggs from a woman's ovaries, inserting them into the Fallopian tube with sperm, and allowing them to fertilize on their own.
General practitioner
A physician who provides basic care. Unlike like a family physician, who must complete a three-year residency in obstetrics, pediatrics, internal medicine, and surgery, the general practitioner does not undergo specialized training after medical school.
Genetic disorder
A disease or condition caused by an abnormality in a person's genetic blueprint. Such conditions include chromosomal disorders involving too much or too little chromosomal material, mutations of genes on the chromosomes, and mutations in conjunction with environmental factors such as exposure to drugs or radiation.
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