|
X-Linked Emery-Dreifuss Muscular Dystrophy
|
D000083143 |
[Emery-Dreifuss muscular dystrophy associated with mutations on emerin (EMD gene) or four and a half LIM domains 1 (FHL1 gene) both located on X chromosome.
] |
|
X-Linked Inhibitor of Apoptosis Protein
|
D051636 |
[An inhibitor of apoptosis protein that is translated by a rare cap-independent mechanism. It blocks caspase-mediated cellular destruction by inhibiting CASPASE 3; CASPASE 7; and CASPASE 9.
] |
|
X-Ray Absorption Spectroscopy
|
D056928 |
[Analysis of the energy absorbed across a spectrum of x-ray energies/wavelengths to determine the chemical structure and electronic states of the absorbing medium.
, Analysis of the oscillations observed in an x-ray absorption spectrum that begin just above the absorption edge (i.e. the point on the spectrum where the amount of x-ray absorption suddenly increases) to determine or evaluate the chemical structure of the absorbing surface.
] |
|
X-Ray Diffraction
|
D014961 |
[The scattering of x-rays by matter, especially crystals, with accompanying variation in intensity due to interference effects. Analysis of the crystal structure of materials is performed by passing x-rays through them and registering the diffraction image of the rays (CRYSTALLOGRAPHY, X-RAY). (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
] |
|
X-Ray Film
|
D014962 |
[A film base coated with an emulsion designed for use with x-rays.
] |
|
X-Ray Intensifying Screens
|
D014963 |
[Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.
] |
|
X-Ray Microtomography
|
D055114 |
[X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.
] |
|
X-Ray Therapy
|
D014964 |
[Medical treatment involving the use of controlled amounts of X-Rays.
] |
|
X-Rays
|
D014965 |
[Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source.
] |
|
X-linked Nuclear Protein
|
D000075924 |
[ATP-dependent DNA helicase that contains two N-terminal ZINC FINGERS and C-terminal ATP-binding and helicase domains. It functions in the regulation of gene transcription and CHROMATIN REMODELING. ATRX undergoes cell-cycle dependent phosphorylation, which causes it to translocate from the NUCLEAR MATRIX to CHROMATIN; thus, it may change its role from gene regulation during INTERPHASE to ensuring proper chromosome segregation at MITOSIS. Mutations in the ATRX gene are associated with cases of X-LINKED MENTAL RETARDATION co-morbid with ALPHA-THALASSEMIA (ATRX syndrome).
] |
|
X-ray Repair Cross Complementing Protein 1
|
D000076105 |
[A poly(ADP)-ribose-binding protein that functions in the rejoining of DNA single-strand breaks that arise following treatment with alkylating agents or ionizing radiation. It interacts with DNA LIGASE III and POLY ADP RIBOSE POLYMERASE in BASE EXCISION REPAIR, and may also function in DNA processing and chromosome recombination in GERM CELLS.
] |
|
XYY Karyotype
|
D014997 |
[Abnormal genetic constitution in males characterized by an extra Y chromosome.
] |
|
Xamoterol
|
D017307 |
[A phenoxypropanolamine derivative that is a selective beta-1-adrenergic agonist.
] |
|
Xanthenes
|
D014966 |
[Compounds with three aromatic rings in linear arrangement with an OXYGEN in the center ring.
] |
|
Xanthine
|
D019820 |
[A purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed)
] |
|
Xanthine Dehydrogenase
|
D014968 |
[An enzyme that catalyzes the oxidation of XANTHINE in the presence of NAD+ to form URIC ACID and NADH. It acts also on a variety of other purines and aldehydes.
] |
|
Xanthine Oxidase
|
D014969 |
[An iron-molybdenum flavoprotein containing FLAVIN-ADENINE DINUCLEOTIDE that oxidizes hypoxanthine, some other purines and pterins, and aldehydes. Deficiency of the enzyme, an autosomal recessive trait, causes xanthinuria.
] |
|
Xanthines
|
D014970 |
[Purine bases found in body tissues and fluids and in some plants.
] |
|
Xanthinol Niacinate
|
D014971 |
[A vasodilator used in peripheral vascular disorders and insufficiency. It may cause gastric discomfort and hypotension.
] |
|
Xanthium
|
D031210 |
[A plant genus of the family ASTERACEAE. The name "prickly burweed" is sometimes used but causes confusion with AMSINCKIA.
, Xanthium spinosum L. is considered a noxious weed.
] |
