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Methylation
Methylation A biochemical process involving the addition of chemical tags called methyl groups (-CH3) to DNA. Methylation can be a signal for a gene or a section of a chromosome to turn off gene expression and become inactive or "silent".
RELATED TERMS--------------------------------------
Biochemical
Relating to biochemistry, the application of the tools and concepts of chemistry to living systems.
DNA
Deoxyribo-Nucleic acid. DNA molecules carry the genetic information necessary for the organization and functioning of most living cells and control the inheritance of characteristics.
Methylation
A biochemical process involving the addition of chemical tags called methyl groups (-CH3) to DNA. Methylation can be a signal for a gene or a section of a chromosome to turn off gene expression and become inactive or "silent".
Gene
1. A unit of DNA that carries information for the biosynthesis of a specific product in the cell. 2. Ultimate unit by which inheritable characteristics are transmitted to succeeding generations in all living organisms. Genes are contained by, and arranged along the length of, the chromosome. The gene is composed of deoxyribonucleic acid (DNA). Each chromosome of each species has a definite number and arrangement of genes, which govern both the structure and metabolic functions of the cells and thus of the entire organism.
Chromosome
A structural unit within a eukaryotic nucleus that carries genes. A chromosome consists of a long, continuous strand of DNA and associated proteins.
SIMILAR TERMS--------------------------------------
Methadone hcl
Methadone hcl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methadone hydrochloride.
Methadone hcl intensol
Methadone hcl intensol is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methadone hydrochloride.
Methadose
Methadose is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methadone hydrochloride.
Methampex
Methampex is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methamphetamine hydrochloride.
Methamphetamine
A central nervous system stimulant similar to amphetamine sulfate but more potent. It is a member of the amphetamine class and is preferred by habitual amphetamine users. In intravenous form, it produces an almost instantaneous onset of the drug's effect. Slang names include "meth," "speed," and "crystal."
Methamphetamine hcl
Methamphetamine hcl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methamphetamine hydrochloride.
Metharbital
An anticonvulsant.
Methazolamide
Methazolamide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methazolamide.
Methdilazine hcl
Methdilazine hcl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methdilazine hydrochloride.
Methenamine hippurate
Methenamine hippurate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methenamine hippurate.
Methergin
Used in the management of third stage labor, this medication consists of methylergometrine hydrogen maleate and is made by Novartis.
Methergine
Methergine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylergonovine maleate.
Methimazole
Methimazole is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methimazole.
Methocarbamol
Methocarbamol is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methocarbamol.
Methocarbamol and aspirin
Methocarbamol and aspirin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): aspirin; methocarbamol.
Methodist Healthcare System of San Antonio
Methodist Healthcare System of San Antonio is a hospital in San Antonio, Texas (USA).
Methodist Hospital
Methodist Hospital is a hospital in Henderson, Kentucky (USA).
Methodist Hospital Of Sacramento
The Methodist Hospital Of Sacramento is a hospital in Sacramento, California, United States.
Methodist Hospital of Southern California
The Methodist Hospital of Southern California is a hospital in Los Angeles, California, United States.
Methodist Hospital, Park Nicollet Health Services
Methodist Hospital, Park Nicollet Health Services is a hospital in Minneapolis, Minnesota (USA).
Methodist Medical Center
Methodist Medical Center is a hospital in Peoria, Illinois (USA).
Methodist Medical Center of Oak Ridge
Methodist Medical Center of Oak Ridge is a hospital in Oak Ridge, Tennessee (USA).
Methodist North
Methodist North is a hospital in Memphis, Tennessee (USA).
Methodist Sugar Land Hospital
The Methodist Sugar Land Hospital is a hospital in Sugar Land, Texas, United States.
Methotrexate
A drug which is used in the treatment of rheumatoid arthritis and other inflammatory disorders. It is a cytotoxic/immunosuppressive drug.
Methotrexate lpf
Methotrexate lpf is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methotrexate sodium.
Methotrexate preservative free
Methotrexate preservative free is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methotrexate.
Methotrexate sodium
Methotrexate sodium is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methotrexate sodium.
Methotrexate sodium preservative free
Methotrexate sodium preservative free is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methotrexate sodium.
Methoxsalen
Methoxsalen is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methoxsalen.
Methscopolamine bromide
Methscopolamine bromide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methscopolamine bromide.
Methyclothiazide
Methyclothiazide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methyclothiazide.
Methyclothiazide and deserpidine
Methyclothiazide and deserpidine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): deserpidine; methyclothiazide.
Methyldopa
Methyldopa is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methyldopa.
Methyldopa and chlorothiazide
Methyldopa and chlorothiazide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): chlorothiazide; methyldopa.
Methyldopa and hydrochlorothiazide
Methyldopa and hydrochlorothiazide is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): hydrochlorothiazide; methyldopa.
Methyldopate hcl
Methyldopate hcl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methyldopate hydrochloride.
Methylin
Methylin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylphenidate hydrochloride.
Methylin er
Methylin er is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylphenidate hydrochloride.
Methylphenidate hcl
Methylphenidate hcl is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylphenidate hydrochloride.
Methylprednisolone
Methylprednisolone is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylprednisolone.
Methylprednisolone acetate
Methylprednisolone acetate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylprednisolone acetate.
Methylprednisolone sodium succinate
Methylprednisolone sodium succinate is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methylprednisolone sodium succinate.
Methyltestosterone
Methyltestosterone is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): methyltestosterone.
PREVIOUS AND NEXT TERMS--------------------------------------
Myocardium
The muscle wall of the heart.
Myomectomy
Surgical procedure done to remove fibroids from the uterus, leaving the uterus intact.
Mycoplasma
Very common sexually transmitted disease or urinary tract infection caused by a bacteria-like organism in the urethra and reproductive system.
Myelogram
A specific X-ray study that uses an injection of a dye or contrast material into the spinal canal to allow careful evaluation of the spinal canal and nerve roots.
Male factor infertility
Condition in which a male patient is infertile for such reasons as very low sperm count, sperm that cannot swim properly, sperm that are unable to penetrate the egg, or blocked sperm ducts.
Methylation
Minor H antigens
Or minor histocompatibility antigens. A group of proteins (in addition to those encoded by the major histocompatibility complex (MHC) that can cause transplant tissue rejection. Minor H antigens can cause tissue rejection even when donor and recipient are matched for MHC. Immune response to minor H antigens is far less potent than response to MHC-encoded proteins, so the rejection is a slower process.
Mitochondrial heteroplasmy
An atypical condition characterized by the presence of more than one type of mitochondrial DNA in a single individual. Normally, each individual has only one type of mitochondrial DNA, inherited from his or her mother through the egg at fertilization. (Mitochondria from the sperm are systematically eliminated by the egg at fertilization.)Cloned organisms may exhibit mitochondrial heteroplasmy (having a mixture of mitochondria from both the donor cell and the recipient egg) because this elimination system may be bypassed during the cloning process.
Mitochondrion
Plural: mitochondria. A cellular structure in the cytoplasm that provides energy to the cell. Each cell contains many mitochondria. In humans, a single mitochondrion contains 37 genes on a circular mitochondrial DNA, compared with about 35,000 genes contained in the nuclear DNA.
Monozygotic twins
Twins derived from one egg and one sperm (often called identical twins).
Morula
The preimplantation embryo 3-4 days after fertilization, when it is a solid mass composed of 12-32 cells (blastomeres). After the eight-cell stage, the cells of the preimplantation embryo begin to adhere to each other more tightly, becoming "compacted". The resulting embryo resembles a mulberry and is called a morula (Latin: morus = mulberry).
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