| D007524 |
Isodesmosine |
2-(4-Amino-4-carboxybutyl)-1-(5-amino-5-carboxypentyl)-3,5-bis(3-amino-3-carboxypropyl)pyridinium. A rare amino acid found in elastin, formed by condensation of four molecules of lysine into a pyridinium ring. |
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| D009587 |
Nitrogen Isotopes |
Stable nitrogen atoms that have the same atomic number as the element nitrogen but differ in atomic weight. N-15 is a stable nitrogen isotope. |
Nitrogen Isotope,Isotope, Nitrogen,Isotopes, Nitrogen |
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| D002247 |
Carbon Isotopes |
Stable carbon atoms that have the same atomic number as the element carbon but differ in atomic weight. C-13 is a stable carbon isotope. |
Carbon Isotope,Isotope, Carbon,Isotopes, Carbon |
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| D002853 |
Chromatography, Liquid |
Chromatographic techniques in which the mobile phase is a liquid. |
Liquid Chromatography |
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| D003895 |
Desmosine |
A rare amino acid found in elastin, formed by condensation of four molecules of lysine into a pyridinium ring. |
4-(4-Amino-4-Carboxybutyl)-1-(5-Amino-5-Carboxypentyl)-3,5-bis(3-Amino-3-Carboxypropyl)pyridinium |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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| D012867 |
Skin |
The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS. |
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| D015394 |
Molecular Structure |
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. |
Structure, Molecular,Molecular Structures,Structures, Molecular |
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| D053719 |
Tandem Mass Spectrometry |
A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection. |
Mass Spectrometry-Mass Spectrometry,Mass Spectrometry Mass Spectrometry,Mass Spectrometry, Tandem |
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