MeSH

major constituent of garlic oil

Date introduced: February 4, 1981

Agents that reduce the frequency or rate of spontaneous or induced tumors independently of the mechanism involved.

Year introduced: 1992

Agents that reduce the frequency or rate of spontaneous or induced mutations independently of the mechanism involved.

Year introduced: 1992

Chemical substances that are destructive to spermatozoa used as topically administered vaginal contraceptives.

Year introduced: 1975

Substances that inhibit or prevent the proliferation of NEOPLASMS.

Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS.

Inorganic or organic compounds that contain sulfur as an integral part of the molecule.

Year introduced: 1998

Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties.

A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.

Year introduced: 1998

An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.

A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class.

Year introduced: 1998

A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)

Year introduced: 1973(1971)

Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms join to form a ring structure.

Year introduced: 1998

Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.

Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (ELECTROLYSIS). (Grant and Hackh's Chemical Dictionary, 5th ed)

Chemical groups containing the covalent disulfide bonds -S-S-. The sulfur atoms can be bound to inorganic or organic moieties.

Year introduced: 1973(1971)

Negatively charged atoms, radicals or groups of atoms which travel to the anode or positive pole during electrolysis.

Year introduced: 1974

Alkenes with the general formula H2C=CH-CH2-R.

Year introduced: 1973(1971)

Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant and Hackh's Chemical Dictionary, 5th ed, p408)

Year introduced: 1966

Uses of chemicals which affect the course of conditions, diseases, syndromes or pathology to benefit the health of an individual.

Year introduced: 2004