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| This glossary contains: 19186 medical terms |
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Exonuclease
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ExonucleaseAn enzyme that cleaves nucleotide bases sequentially from the free ends of a nucleic acid (DNA or RNA).
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Enzyme
A cellular protein whose shape allows it to hold together several other molecules in close proximity to each other. In this way, enzymes are able to induce chemical reactions in other substances with little expenditure of energy and without being changed themselves. Basically, an enzyme acts as a catalyst.
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Exon
The region of DNA coding for a protein or a segment of a protein.
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Exercise, passive
Movement of the body, usually of the limbs, without effort by the patient. The patient is passive.
Exercise-induced asthma
Asthma that is "triggered" by vigorous physical activity. Exercise-induced asthma tends particularly to affect children and young adults (because of their high level of physical activity) but can occur at any age.
Exercise-induced bronchospasm
Also called exercise- induced asthma, this is asthma that is triggered by vigorous physical activity. Exercise-induced asthma tends particularly to affect children and young adults (because of their high level of physical activity) but can occur at any age.
Exocrine gland
A gland that secretes a substance out through a duct. The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract. The exocrine glands are the "glands of external secretion."
Exogenous DNA
DNA originating outside an organism.
Exonuclease
Exopeptidase
An enzyme that catalyzes the cleavage of the terminal (last) or next-to-last peptide bond from a polypeptide or protein, releasing a single amino acid or dipeptide. By contrast, an endopeptidase catalyzes the cleavage of then internal peptide bonds within a polypeptide or protein.
Expectorant
A medication that helps bring up mucus and other material from the lungs, bronchi, and trachea. An example of as expectorant is guaifenesin which promotes drainage of mucus from the lungs by thinning the mucus and also lubricates the irritated respiratory tract. Sometimes the term "expectorant" is incorrectly extended to any cough medicine.
Expectoration
A big polysyllabic word for sputum or the act of bringing up and spitting out sputum.
Expiration date
The date for a drug estimated for its shelf life with proper storage in sealed containers away from harmful and variable factors like heat and humidity. The expiration date of a medicine is based on data, called accelerated stability data, from testing by the manufacturer, that show the product will be good for a particular period of time.
Explant
1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and the tissue that is transferred. 2. To remove a device that had been implanted.
RELATED TERMS--------------------------------------
Enzyme
A cellular protein whose shape allows it to hold together several other molecules in close proximity to each other. In this way, enzymes are able to induce chemical reactions in other substances with little expenditure of energy and without being changed themselves. Basically, an enzyme acts as a catalyst.
SIMILAR TERMS--------------------------------------
Exon
The region of DNA coding for a protein or a segment of a protein.
PREVIOUS AND NEXT TERMS--------------------------------------
Exercise, passive
Movement of the body, usually of the limbs, without effort by the patient. The patient is passive.
Exercise-induced asthma
Asthma that is "triggered" by vigorous physical activity. Exercise-induced asthma tends particularly to affect children and young adults (because of their high level of physical activity) but can occur at any age.
Exercise-induced bronchospasm
Also called exercise- induced asthma, this is asthma that is triggered by vigorous physical activity. Exercise-induced asthma tends particularly to affect children and young adults (because of their high level of physical activity) but can occur at any age.
Exocrine gland
A gland that secretes a substance out through a duct. The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract. The exocrine glands are the "glands of external secretion."
Exogenous DNA
DNA originating outside an organism.
Exonuclease
Exopeptidase
An enzyme that catalyzes the cleavage of the terminal (last) or next-to-last peptide bond from a polypeptide or protein, releasing a single amino acid or dipeptide. By contrast, an endopeptidase catalyzes the cleavage of then internal peptide bonds within a polypeptide or protein.
Expectorant
A medication that helps bring up mucus and other material from the lungs, bronchi, and trachea. An example of as expectorant is guaifenesin which promotes drainage of mucus from the lungs by thinning the mucus and also lubricates the irritated respiratory tract. Sometimes the term "expectorant" is incorrectly extended to any cough medicine.
Expectoration
A big polysyllabic word for sputum or the act of bringing up and spitting out sputum.
Expiration date
The date for a drug estimated for its shelf life with proper storage in sealed containers away from harmful and variable factors like heat and humidity. The expiration date of a medicine is based on data, called accelerated stability data, from testing by the manufacturer, that show the product will be good for a particular period of time.
Explant
1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and the tissue that is transferred. 2. To remove a device that had been implanted.
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This dictionary contains 19186 terms.
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