| Ranvier's crosses | Black or brown figures in the shape of a cross, marking Ranvier's nodes in the longitudinal section of a nerve stained with silver nitrate. (05 Mar 2000) |
|---|---|
| Ranvier's disks | Tactile nerve endings, of cupped disklike form, in the skin. (05 Mar 2000) |
| Ranvier's node | A short interval in the myelin sheath of a nerve fibre, occurring between each two successive segments of the myelin sheath; at the node, the axon is invested only by short, finger-like cytoplasmic processes of the two neighboring Schwann cells or, in the central nervous system, oligodendroglia cells. See: myelin sheath. (05 Mar 2000) |
| ranvier's nodes | Regularly spaced gaps in the myelin sheaths of peripheral axons. Ranvier's nodes allow saltatory conduction, that is, jumping of impulses from node to node, which is faster and more energetically favourable than continuous conduction. (12 Dec 1998) |
| Ranvier's plexus | A subbasal stroma plexus of the cornea. See: stroma plexus. (05 Mar 2000) |
| Ranvier's segment | The portion of a myelinated nerve fibre between two successive nodes. Synonym: interannular segment, internode, Ranvier's segment, segmentum internodale. (05 Mar 2000) |
| Ranvier, Louis | <person> French pathologist, 1835-1922. See: Ranvier's crosses, Ranvier's disks, Ranvier's node, Ranvier's plexus, Ranvier's segment. (05 Mar 2000) |
| Ranvier, Louise Antoine | <person> Was a Physician and Histologist. Professor in the College of France, Paris. Ranvier's Nodes - short specialised interruptions in the myelin sheath occurring along myelinated nerve fibres. Responsible for saltatory conduction. Lived: 1835-1922. B. Lyons, 1835, d. 1922. (05 Dec 1998) |
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| Ranunculus |
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Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| rancid |
Rancid is a band formed in 1992 in Berkeley, California, by former members of Operation Ivy, Matt Freeman and Tim Armstrong. Armstrong and Lars Frederiksen both sing lead vocals and play guitar, with Matt Freeman as backing vocalist and bassist, and Brett Reed as drummer. Rancid's musical style blends punk and hardcore with ska, reggae, rocksteady, and minor elements of rub-a-dub and funk. ...
Ãâó: en.wikipedia.org/wiki/Rancid
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| random |
There are many minor characters in the various versions of The Hitchhiker's Guide to the Galaxy, by Douglas Adams. In fact, defining a major character is rather difficult. If the major characters are those the plot focuses on, they are Arthur Dent, Ford Prefect, Zaphod Beeblebrox, Marvin and Trillian, with the possible inclusion of Slartibartfast, Random Dent and Fenchurch. If they are defined as characters appearing in all the books, they are only Ford Prefect and Arthur Dent. ...
Ãâó: en.wikipedia.org/wiki/Random_(character)
|
| random genetic drift |
Genetic drift is a mechanism of evolution that acts in concert with natural selection to change the characteristics of species over time. It is a stochastic effect that arises from the role of random sampling in the production of offspring. Like selection, it acts on populations, altering the frequency of alleles and the predominance of traits amongst members of a population, and changing the diversity of the group. ...
Ãâó: en.wikipedia.org/wiki/Random_genetic_drift
|
| randomization |
When referring to an experiment or clinical trial, the process by which animal or human subjects are assigned by chance to separate groups that compare different treatments or other interventions. Randomization gives each participant an equal chance of being assigned to any of the groups.
Ãâó: www.stjude.org/glossary
|
| RAN | lay out in a line |
|---|---|
| RAN | feed as in a meadow or pasture |
| RAN | move about aimlessly or without any destination, often in search of food or employment |
| RAN | range or extend over |
| RAN | change or be different within limits |
| RAN | have a range |
| RAN | a measuring instrument (acoustic or optical or electronic) for finding the distance of an object |
| RAN | exhaust hood over a kitchen range |
| RAN | direct onto a point or target, esp. by automatic navigational aids |
| RAN | a series of hills or mountains |
| RAN | surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide |
| RAN | a measuring instrument (acoustic or optical or electronic) for finding the distance of an object |
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