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Hydrazones
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D006835 |
[Compounds of the general formula R:N.NR2, as resulting from the action of hydrazines with aldehydes or ketones. (Grant & Hackh's Chemical Dictionary, 5th ed)
] |
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Hydro-Lyases
|
D006836 |
[Enzymes that catalyze the breakage of a carbon-oxygen bond leading to unsaturated products via the removal of water. EC 4.2.1.
] |
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Hydroa Vacciniforme
|
D006837 |
[A vesicular and bullous eruption having a tendency to recur in summer during childhood and commonly appearing on sun-exposed skin. The lesions are surrounded by an erythematous zone and resemble a vaccination. (From Dorland, 27th ed)
] |
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Hydrobiology
|
D056127 |
[The study of aquatic life inhabiting bodies of water, including growth, morphology, physiology, genetics, distribution, and interactions with other organisms and the environment. It includes MARINE HYDROBIOLOGY.
] |
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Hydrobromic Acid
|
D018054 |
[Hydrobromic acid (HBr). A solution of hydrogen bromide gas in water.
] |
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Hydrocarbons
|
D006838 |
[Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.
] |
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Hydrocarbons, Acyclic
|
D006839 |
[Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms join to form a ring structure.
] |
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Hydrocarbons, Alicyclic
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D006840 |
[Organic compounds composed exclusively of carbon and hydrogen. Three or more carbon atoms are arranged in a cyclic structure and they possess aliphatic properties.
] |
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Hydrocarbons, Aromatic
|
D006841 |
[Organic compounds containing carbon and hydrogen in the form of an unsaturated, usually hexagonal ring structure. The compounds can be single ring, or double, triple, or multiple fused rings.
] |
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Hydrocarbons, Brominated
|
D006842 |
[Hydrocarbon compounds with one or more HYDROGEN atoms substituted with BROMINE.
] |
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Hydrocarbons, Chlorinated
|
D006843 |
[Hydrocarbon compounds with one or more of the hydrogens replaced by CHLORINE.
] |
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Hydrocarbons, Cyclic
|
D006844 |
[Organic compounds composed exclusively of carbon and hydrogen forming a closed ring that may be either alicyclic or aromatic.
, Hydrocarbons consisting of two or more ring structures.
] |
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Hydrocarbons, Fluorinated
|
D006845 |
[Inert liquid or gaseous halocarbon compounds in which FLUORINE replaces some or all HYDROGEN atoms.
] |
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Hydrocarbons, Halogenated
|
D006846 |
[Hydrocarbon compounds with one or more HYDROGEN atoms substituted with HALOGENS.
] |
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Hydrocarbons, Iodinated
|
D006847 |
[Hydrocarbon compounds with one or more HYDROGEN atoms substituted with IODINE.
] |
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Hydrocephalus
|
D006849 |
[Enlargement of CEREBRAL VENTRICLES. Although it is often isolated without other CNS anomalies it can be associated with other congenital malformations (e.g., ARNOLD-CHIARI MALFORMATION; DANDY-WALKER MALFORMATION, and ACROCALLOSAL SYNDROME).
, Excessive accumulation of cerebrospinal fluid within the cranium which may be associated with dilation of cerebral ventricles, INTRACRANIAL HYPERTENSION; HEADACHE; lethargy; URINARY INCONTINENCE; and ATAXIA.
] |
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Hydrocephalus, Normal Pressure
|
D006850 |
[A form of compensated hydrocephalus characterized clinically by a slowly progressive gait disorder (see GAIT DISORDERS, NEUROLOGIC), progressive intellectual decline, and URINARY INCONTINENCE. Spinal fluid pressure tends to be in the high normal range. This condition may result from processes which interfere with the absorption of CSF including SUBARACHNOID HEMORRHAGE, chronic MENINGITIS, and other conditions. (From Adams et al., Principles of Neurology, 6th ed, pp631-3)
] |
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Hydrocharitaceae
|
D031321 |
[A plant family of the order Hydrocharitales, subclass ALISMATIDAE, class Liliopsida (monocotyledons).
] |
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Hydrochloric Acid
|
D006851 |
[A strong corrosive acid that is commonly used as a laboratory reagent. It is formed by dissolving hydrogen chloride in water. GASTRIC ACID is the hydrochloric acid component of GASTRIC JUICE.
] |
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Hydrochlorothiazide
|
D006852 |
[A thiazide diuretic often considered the prototypical member of this class. It reduces the reabsorption of electrolytes from the renal tubules. This results in increased excretion of water and electrolytes, including sodium, potassium, chloride, and magnesium. It is used in the treatment of several disorders including edema, hypertension, diabetes insipidus, and hypoparathyroidism.
] |
