| nucleic acid heteroduplexes | Double-stranded nucleic acid molecules (DNA-DNA or DNA-RNA) which contain regions of nucleotide mismatches (non-complementary). In vivo, these heteroduplexes can result from mutation or genetic recombination; in vitro, they are formed by nucleic acid hybridization. Electron microscopic analysis of the resulting heteroduplexes facilitates the mapping of regions of base sequence homology of nucleic acids. (12 Dec 1998) |
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| nucleic acid hybridization | Widely used technique which exploits the ability of complementary sequences in single-stranded dnas or rnas to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (kendrew, encyclopedia of molecular biology, 1994, p503; dorlands, 28th ed, p781) (12 Dec 1998) |
| nucleic acid precursors | Use for nucleic acid precursors in general or for which there is no specific heading. (12 Dec 1998) |
| nucleic acid probe | A nucleic acid fragment, labelled by a radioisotope, biotin, etc., that is complementary to a sequence in another nucleic acid (fragment) and that will, by hydrogen binding to the latter, locate or identify it and be detected; a diagnostic technique based on the fact that every species of microbe possesses some unique nucleic acid sequences which differentiate it from all others, and thus can be used as identifying markers or "fingerprints." (05 Mar 2000) |
| nucleic acid probes | Nucleic acid which complements a specific mRNA or DNA molecule, or fragment thereof; used for hybridization studies in order to identify microorganisms and for genetic studies. (12 Dec 1998) |
| nucleic acid renaturation | The reformation of all, or part of, the native conformation of a nucleic acid molecule after the molecule has undergone denaturation. (12 Dec 1998) |
| nucleic acid synthesis inhibitors | Compounds that inhibit cell production of DNA or RNA. (12 Dec 1998) |
| nucleic acids | Highly complex portions of nucleoproteins that yield a mixture of purines and pyrimidines, a ribose or deoxyribose component, and phosphoric acid on complete hydrolysis. The two general types are ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). (12 Dec 1998) |
| nucleic acids, nucleotides, and nucleosides | Complex compounds of high molecular weight occurring in living cells. These are basically of two types, ribonucleic (RNA) and deoxyribonucleic (DNA) acids, both of which consist of nucleotides (nucleoside phosphates linked together by phosphate bridges). (12 Dec 1998) |
| nucleiform | Shaped like or having the appearance of a nucleus. Synonym: nucleoid. (05 Mar 2000) |
| nuclein | The term used by Friedrich Miescher to describe the nuclear material he discovered in 1869, which today is known as DNA. (09 Oct 1997) |
| nucleinase | An obsolete term for nuclease. (05 Mar 2000) |
| nucleinic base | An obsolete term for purine. (05 Mar 2000) |
| nucleo- | Nucl- Nucleus, nuclear. See: karyo-, caryo-. Origin: L. Nucleus (05 Mar 2000) |
| nucleobranch | <zoology> Belonging to the Nucleobranchiata. One of the Nucleobranchiata. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Acid Precursors, Nucleic, Precursors, Nucleic Acid
Synonyms : Acid Probes, Nucleic, Probes, Nucleic Acid
Synonyms : Acid Renaturation, Nucleic, Acid Renaturations, Nucleic, Nucleic Acid Renaturations, Renaturation, Nucleic Acid, Renaturations, Nucleic Acid
Synonyms : Inhibitors, DNA Synthesis, Inhibitors, Nucleic Acid Synthesis, Inhibitors, RNA Synthesis, Synthesis Inhibitors, DNA, Synthesis Inhibitors, RNA
Synonyms : Acids, Nucleic
| nucleolar organizer |
nucleolus organizer: the particular part of a chromosome that is associated with a nucleolus after nuclear division
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| nucleonics |
nuclear physics: the branch of physics that studies the internal structure of atomic nuclei
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| numbness |
partial or total lack of sensation in a part of the body; a symptom of nerve damage or dysfunction apathy: the trait of lacking enthusiasm for or interest in things generally
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| numeral |
a symbol used to represent a number; "he learned to write the numerals before he went to school" of or relating to or denoting numbers; "a numeral adjective"; "numerical analysis"
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| nurse |
try to cure by special care of treatment, of an illness or injury; "He nursed his cold with Chinese herbs" harbor: maintain (a theory, thoughts, or feelings); "bear a grudge"; "entertain interesting notions"; "harbor a resentment" serve as a nurse; care for sick or handicapped people one skilled in caring for young children or the sick (usually under the supervision of a physician) treat carefully; "He nursed his injured back by lying in bed several hours every afternoon"; "He nursed the flowers in his garden and fertilized them regularly" nanny: a woman who is the custodian of children breastfeed: give suck to; "The wetnurse suckled the infant"; "You cannot nurse your baby in public in some places"
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| NU | someone who nudges |
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| NU | any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body |
| NU | comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug |
| NU | the practice of living without clothes for reasons of health |
| NU | a person who practices nudity for reasons of health or religion |
| NU | in accord with naturism |
| NU | the state of being without clothing or covering of any kind |
| NU | (Yiddish) someone who is a boring pest |
| NU | (Yiddish) someone who is a boring pest |
| NU | British industrialist who manufactured automobiles and created a philanthropic foundation (1877-1963) |
| NU | of no real value |
| NU | a solid lump of a precious metal (especially gold) as found in the earth |