|
Hyaluronic Acid
|
D006820 |
[A natural high-viscosity mucopolysaccharide with alternating beta (1-3) glucuronide and beta (1-4) glucosaminidic bonds. It is found in the UMBILICAL CORD, in VITREOUS BODY and in SYNOVIAL FLUID. A high urinary level is found in PROGERIA.
] |
|
Hyaluronoglucosaminidase
|
D006821 |
[An enzyme that catalyzes the random hydrolysis of 1,4-linkages between N-acetyl-beta-D-glucosamine and D-glucuronate residues in hyaluronate. (From Enzyme Nomenclature, 1992) There has been use as ANTINEOPLASTIC AGENTS to limit NEOPLASM METASTASIS.
] |
|
Hybrid Cells
|
D006822 |
[Any cell, other than a ZYGOTE, that contains elements (such as NUCLEI and CYTOPLASM) from two or more different cells, usually produced by artificial CELL FUSION.
] |
|
Hybrid Renal Replacement Therapy
|
D000079782 |
[Procedures involving non-continuous blood purification (e.g., dialysis, filtration or perfusion) via vascular access with settings for dialysate and blood flow rates and treatment duration settings hybrid between CRRT TECHNIQUE and IRRT TECHNIQUE.
] |
|
Hybrid Vigor
|
D006823 |
[The adaptive superiority of the heterozygous GENOTYPE with respect to one or more characters in comparison with the corresponding HOMOZYGOTE.
] |
|
Hybridization, Genetic
|
D006824 |
[The genetic process of crossbreeding between genetically dissimilar parents to produce a hybrid.
] |
|
Hybridomas
|
D006825 |
[Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure MONOCLONAL ANTIBODIES or T-cell products, identical to those produced by the immunologically competent parent cell.
] |
|
Hycanthone
|
D006826 |
[Potentially toxic, but effective antischistosomal agent, it is a metabolite of LUCANTHONE.
] |
|
Hydantoins
|
D006827 |
[Compounds based on imidazolidine dione. Some derivatives are ANTICONVULSANTS.
] |
|
Hydatidiform Mole
|
D006828 |
[Derived from the fertilization of an apparently normal ovum by two sperm. Partial hydatidiform moles are characterized by focal chorionic villi swelling, focal trophoblastic hyperplasia, and identifiable fetal or embryonic tissue. Partial moles generally have a triploid karyotype.
, Derived from the fertilization of an anuclear ovum by one or sometimes two haploid sperm. Its molar chromosomes derive entirely from the paternal origin. It has no identifiable embryonic or fetal tissue. The chorionic villi have generalized swelling and diffuse trophoblastic hyperplasia. Most complete moles (>90%) have a 46,XX karyotype and the rest 46,XY karyotype.
, Trophoblastic hyperplasia associated with normal gestation, or molar pregnancy. It is characterized by the swelling of the CHORIONIC VILLI and elevated human CHORIONIC GONADOTROPIN. Hydatidiform moles or molar pregnancy may be categorized as complete or partial based on their gross morphology, histopathology, and karyotype.
] |
|
Hydatidiform Mole, Invasive
|
D002820 |
[A uterine tumor derived from persistent gestational TROPHOBLASTS, most likely after a molar pregnancy (HYDATIDIFORM MOLE). Invasive hyadatiform mole develops in about 15% of patients after evacuation of a complete mole and less frequently after other types of gestation. It may perforate the MYOMETRIUM and erode uterine vessels causing hemorrhage.
] |
|
Hydra
|
D006829 |
[A genus of freshwater polyps in the family Hydridae, order Hydroida, class HYDROZOA. They are of special interest because of their complex organization and because their adult organization corresponds roughly to the gastrula of higher animals.
] |
|
Hydralazine
|
D006830 |
[A direct-acting vasodilator that is used as an antihypertensive agent.
] |
|
Hydranencephaly
|
D006832 |
[A congenital condition where the greater portions of the cerebral hemispheres and CORPUS STRIATUM are replaced by CSF and glial tissue. The meninges and the skull are well formed, which is consistent with earlier normal embryogenesis of the telencephalon. Bilateral occlusions of the internal carotid arteries in utero is a potential mechanism. Clinical features include intact brainstem reflexes without evidence of higher cortical activity. (Menkes, Textbook of Child Neurology, 5th ed, p307)
] |
|
Hydrangea
|
D031966 |
[A plant genus of the family HYDRANGEACEAE. Members contain hydrangenol, thunberginols, hydramacrosides A and B, and secoiridoid glucosides.
] |
|
Hydrangeaceae
|
D029628 |
[A plant family of the order ROSALES, subclass Rosidae, class Magnoliopsida.
] |
|
Hydrarthrosis
|
D006833 |
[Accumulation of watery fluid in the cavity of a joint. (Dorland, 27th ed)
] |
|
Hydrastis
|
D039321 |
[A plant genus of the family RANUNCULACEAE. Members contain BERBERINE.
] |
|
Hydraulic Fracking
|
D000067071 |
[A drilling technology in which NATURAL GAS is extracted from large deposits of impermeable rock formations known as shale, deep within the earth’s crust. This drilling technique involves injecting large volumes of high-pressure fracturing fluid (a mixture of water, sand, and chemicals) several thousand feet underground, thereby creating cracks or fissures in the shale formation, and releasing trapped gas.
] |
|
Hydrazines
|
D006834 |
[Substituted derivatives of hydrazine (formula H2N-NH2).
] |
