| RPIPP | reverse phase ion-pair partition |
|---|---|
| RPLC | reverse phase liquid chromatography |
| RT3, | rT3 reverse triiodothyronine |
| RTA | ray tracing algorithm; renal tubular acidosis; reverse transcriptase assay; road traffic accident |
| RTI | respiratory tract infection; reverse transcriptase inhibition |
| DDRT-PCR | Differential display reverse transcription PCR |
|---|---|
| DDRT-PCR | Differential display reverse transcription polymerase chain reaction |
| HIV-RT | Human immunodeficiency virus reverse transcriptase |
| hTERT | Human telomerase reverse transcriptase |
| NNRTI | Non nucleoside reverse transcriptase inhibitors |
| coupled transport | The linked, simultaneous transport of two substances across a cell membrane (or another intracellular membrane). If the two substances are moving in the same direction (both into the cell or both out of the cell) it is called symport. If the two substances are moving in opposite directions (one moves into the cell while the other moves out) it is called antiport. (09 Oct 1997) |
|---|---|
| hydrogen transport | The transfer of hydrogen from one metabolite (hydrogen donor) to another (hydrogen acceptor) through the action of an enzyme system; the donor is thus oxidised and the acceptor reduced. (05 Mar 2000) |
| sperm transport | Passive transport or active migration of spermatozoa from the testes through the male genital system as well as within the female genital system. (12 Dec 1998) |
| nuclear transport | <cell biology> Passage of molecules in and out of the nucleus, presumably via nuclear pores. Passage of proteins into the nucleus may depend on possession of a nuclear location sequence containing five consecutive positively charged residues PKKKRKV). (18 Nov 1997) |
| nucleocytoplasmic transport | <cell biology, molecular biology> Transport of molecules from the nucleus to the cytoplasm. (18 Nov 1997) |
| iodide transport defect | See: familial goiter. (05 Mar 2000) |
| ion transport | The movement of ions across energy-transducing cell membranes. Transport can be active or passive. Passive ion transport (facilitated diffusion) derives its energy from the concentration gradient of the ion itself and allows the transport of a single solute in one direction (uniport). Active ion transport is usually coupled to an energy-yielding chemical or photochemical reaction such as ATP hydrolysis. This form of primary active transport is called an ion pump. Secondary active transport utilises the voltage and ion gradients produced by the primary transport to drive the cotransport of other ions or molecules. These may be transported in the same (symport) or opposite (antiport) direction. (12 Dec 1998) |
| orthograde transport | Axonal transport from the cell body of the neuron towards the synaptic terminal. Opposite of retrograde transport and probably dependent on a different mechanochemical protein (almost definitely kinesin) interacting with microtubules. (18 Nov 1997) |
| ovum transport | Transport of the ovum or zygote from the site of ovulation to the site of implantation. (12 Dec 1998) |
| transcellular transport | Solute movement across an epithelial cell layer through the cells. Compare: paracellular transport. (05 Mar 2000) |
| transport | <radiobiology> Refers to processes which cause heat energy, or particles, or something else, to flow out of the plasma and cease being confined. Diffusion partly determines the rate of transport. Energy losses from a plasma due to transport processes are a central problem in fusion energy research. See: classical transport, neoclassical transport, anomalous tranport, diffusion, ambipolar diffusion, Bohm diffusion, classical diffusion, neoclassical diffusion, anomalous diffusion, energy transport, ripple transport. (09 Oct 1997) |
| transport antibiotic | A substance that makes biomembranes permeable to certain ions. (05 Mar 2000) |
| transport diseases | Single gene defect diseases in which there is an inability to transport particular small molecules across membranes. Examples are aminoacidurias such as cystinuria, iminoglycinuria, Hartup disease, Fanconi disease. (18 Nov 1997) |
| transport host | An intermediate host in which no development of the parasite occurs, although its presence may be required as an essential link in the completion of the parasite's life cycle; e.g., the successive fish host's that carry the plerocercoid of Diphyllobothrium latum, the broad fish tapeworm, to larger food fish eventually eaten by man or other final host's. Synonym: transport host. (05 Mar 2000) |
| transport medium | A medium for transporting clinical specimens to the laboratory for examination. (05 Mar 2000) |