Author: Glossary
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DNA melting temperature
The temperature at which the DNA helix loosens into a coil.
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DNA laddering
The fragmentation of DNA that occurs during apoptosis.
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DNA ladder
A solution of double stranded DNA fragments whose molecule weights (and number of base pairs) are known and standardized. The ladder is used to calibrate electrophoresis gels so that samples of unknown DNA that have been introduced into the gel can be measured.
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Naked DNA
DNA that has been modified to remove the proteins that normally surround it; used for genetic transfers and vaccine manufacture, among other purposes.
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Mitochondrial DNA
Deoxyribonucleic acid (DNA) in the intracellular bodies known as mitochondria. It differs from nuclear DNA in its nucleotide sequences, its size (about 16.5 kb), and its source (it is derived solely from the egg, not the sperm). Variations in mtDNA point to the ways in which members of a related population differ from each other…
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Tendon divulsor
A device for separating a tendon from the surrounding tissue.
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Pterygium divulsion
An instrument for separating the corneal portion of the pterygium.
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Divulsion
A forcible pulling apart.
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True diverticulum
A diverticulum involving all the coats of muscle in the pouch wall. It is usually congenital.
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Diverticulum of the stomach
A diverticulum of the stomach wall.