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AAA

Overview page. Subjects: Chemistry — Medicine and Health.

1 a codon in mRNA for l‐lysine.

2 abbr. for ATPase associated with varied activities. See AAA protease.

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Aarskog-Scott syndrome

Overview page. Subjects: Chemistry — Medicine and Health.

An X-linked developmental disorder (faciogenital dysplasia, FGDY) in which stature is disproportionately short and there are facial, skeletal, and urogenital abnormalities. The syndrome is...

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ABC

Overview page. Subjects: Medicine and Health — Chemistry.

1. Antigen binding cell.

2. Antigen binding capacity.

3. The avidin–biotin peroxidase complex. Used in an immunocytochemical method...

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abetalipoproteinaemia

Overview page. Subjects: Medicine and Health — Chemistry.

An autosomal recessive defect (acanthocytosis, Bassen–Kornweig syndrome) in which there is total absence of apolipoprotein B (a component of LDL, VLDL, and chylomicrons) caused by a defect...

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ablation

Overview page. Subjects: Medicine and Health — Chemistry.

The removal or excision of a piece of tissue, usually by surgery. Surface ablation of the skin may be carried out by chemicals or laser.

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abscissa

Overview page. Subjects: Public Health and Epidemiology — Chemistry.

The horizontal or X axis of a graph; the vertical or Y axis is the ordinate, and the two axes are the Cartesian coordinates.

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accelerator

Overview page. Subjects: Chemistry — Dentistry.

A substance that speeds up a chemical reaction, such as the addition of plaster of Paris to mineral trioxide aggregate. Heat may also act as an accelerator in speeding up the setting...

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acesulfame

Overview page. Subjects: Medicine and Health — Chemistry.

A group of non-nutritive or intense sweeteners. The potassium salt acesulphame-K is some 200 times as sweet as sucrose. It is not metabolized, and is excreted unchanged.

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acetyl coenzyme A

Overview page. Subjects: Chemistry — Medicine and Health.

(ass-i-tyl-koh-en-zym)

a compound formed by the combination of an acetate molecule with coenzyme A. Acetylcoenzyme A has an important role in the Krebs cycle.

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achondroplasia

Overview page. Subjects: Medicine and Health — Chemistry.

A form of dwarfism (chondrodystrophia fetalis) in which there is a failure of endochondral ossification caused by an autosomal dominant mutation in the gene for the fibroblast growth factor...

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