| ASH | Asymmetric(al) Septal Hypertrophy |
|---|---|
| ACF | accessory clinical findings; acute care facility; anterior cervical fusion; area correction factor; ... |
| AS | acetylstrophanthidin; acidified serum; acoustic schwannoma; acoustic stimulation; active sarcoidosis... |
| ASH | aldosterone-stimulating hormone; American Society of Hematology; alkylosing spinal hyperostosis; ant... |
| asym | asymmetry, asymmetric |
| c strand | <molecular biology> An abbreviation for the term complementary strand used of nucleic acids. (18 Nov 1997) |
|---|---|
| sense strand | <molecular biology> The strand of DNA which is used during transcription to make mRNA. The mRNA made thus has the sequence of the antisense strand of DNA, and it codes for a sense strand of polypeptide (which eventually becomes a protein or part of a protein) during translation. (09 Oct 1997) |
| h strand | <molecular biology> The strand of a double-stranded DNA molecule that is more buoyant than the other and floats at the top of a column when the dsDNA is denatured and put in an equilibrium centrifuge. (09 Oct 1997) |
| single-strand break | A break in double-stranded DNA in which only one of the two strands has been cleaved; both strands have not separated from each other. (05 Mar 2000) |
| negative strand virus | A virus the genome of which is a strand of RNA that is complementary to messenger RNA; negative strand virus's also carry RNA polymerases necessary for the synthesis of messenger RNA. (05 Mar 2000) |
| strand | <geography> The shore, especially the beach of a sea, ocean, or large lake; rarely, the margin of a navigable river. Strand birds. <zoology> The brown hyena. Origin: AS. Strand; akin to D, G, Sw, & Dan. Strand, Icel. Strond. (26 Nov 1998) |
| nonsense strand | <molecular biology> DNA that does not code for part of a polypeptide chain or RNA.This includes introns and pseudo genes. In eukaryotes the majority of the DNA is noncoding. Noncoding strand refers to the so called nonsense strand, as opposed to the sense strand which is actually translated into mRNA. (18 Nov 1997) |
| double-strand break | A break in double-stranded DNA in which both strands have been cleaved; however, the two strands have not separated from each other. (05 Mar 2000) |
| lagging strand | The DNA strand that is replicated discontinuously from the 5' to the 3' direction. See: Okazaki fragments. Compare: leading strand. (09 Oct 1997) |
| four-strand crossing over | Crossing over with both strands of DNA from each sister chromatid, so that both strands from one chromatid are exchanged for both strands on the other. This is different from the usual case where only one of the two DNA strands on one sister chromatid is exchanged for the one matching strand (of the two strands) on the other sister chromatid. (09 Oct 1997) |
| leading strand | The DNA strand that is synthesised continuously during replication Compare: lagging strand. (09 Oct 1997) |
| Adair-Koshland-Nemethy-Filmer model | <biochemistry, chemistry> A model to explain the allosteric form of cooperativity; in this model, in the absence of ligands, the protein exists in only one conformation; upon binding, the ligand induces a conformational change that may be transmitted to other subunits. Synonym: Adair-Koshland-Nemethy-Filmer model, induced fit model. (05 Mar 2000) |
| additive model | A model in which the combined effect of several factors is the sum of the effects that would be produced by each of the factors in the absence of the others. (05 Mar 2000) |
| age-structured model | <epidemiology> A mathematical model which take into consideration the division of the host population into different age classes. Such models can used to consider the consequences of such factors as age-dependent infection, morbidity or mortality rates or of age-specific vaccination schedules. (05 Dec 1998) |
| animal model | Study in a population of laboratory animals that uses conditions of animals analogous to conditions of humans to simulate processes comparable to those that occur in human populations. (05 Mar 2000) |