| D011687 |
Purines |
A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include ADENINE and GUANINE, constituents of nucleic acids, as well as many alkaloids such as CAFFEINE and THEOPHYLLINE. Uric acid is the metabolic end product of purine metabolism. |
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| D011743 |
Pyrimidines |
A family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include several nucleic acid constituents (CYTOSINE; THYMINE; and URACIL) and form the basic structure of the barbiturates. |
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| D011830 |
Radiation Effects |
The effects of ionizing and nonionizing radiation upon living organisms, organs and tissues, and their constituents, and upon physiologic processes. It includes the effect of irradiation on food, drugs, and chemicals. |
Effects, Radiation,Effect, Radiation,Radiation Effect |
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| D002621 |
Chemistry |
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange. |
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| D003036 |
Cobalt Isotopes |
Stable cobalt atoms that have the same atomic number as the element cobalt, but differ in atomic weight. Co-59 is a stable cobalt isotope. |
Isotopes, Cobalt |
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| D003596 |
Cytosine |
A pyrimidine base that is a fundamental unit of nucleic acids. |
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| D006147 |
Guanine |
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| D006863 |
Hydrogen-Ion Concentration |
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH |
pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations |
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| D000225 |
Adenine |
A purine base and a fundamental unit of ADENINE NUCLEOTIDES. |
Vitamin B 4,4, Vitamin B,B 4, Vitamin |
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| D013053 |
Spectrophotometry |
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum. |
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