Dictionary » S » Sentinel



1. One who watches or guards; specifically, a soldier set to guard an army, camp, or other place, from surprise, to observe the approach of danger, and give notice of it; a sentry. The sentinels who paced the ramparts. (Macaulay)

2. Watch; guard. That princes do keep due sentinel.

3. (Science: zoology) A marine crab (Podophthalmus vigil) native of the indian ocean, remarkable for the great length of its eyestalks.

Synonym: sentinel crab.

Origin: F. Sentinelle (cf. It. Sentinella); probably originally, a litle path, the sentinel's beat, and a dim. Of a word meaning, path; cf. F. Sente path. L. Semita; and OF. Sentine, sentele, senteret, diminutive words. Cf. Sentry.

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tumor metastasis

... of the circulatory system - ie, it's a question of which suitable site is closest to the primary in terms of blood supply. The concept of 'sentinel' nodes is similar - it's the lymph node closest to the drainage area from the primary. Overall, the general rule is that metastases form in ...

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by Julie5
Sat Nov 06, 2010 1:58 pm
Forum: Cell Biology
Topic: tumor metastasis
Replies: 1
Views: 6158

Biology EE

If it were me, I'd write about the role of the circulatory system in the spread of cancer by metastatis, involving sentinel nodes, circulating tumour cells, intra/extravasation, reaction of immune cells, 'seed and soil' theory..... It's key to understanding why cancer recurs (and ...

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by Julie5
Mon Oct 18, 2010 10:39 am
Forum: General Discussion
Topic: Biology EE
Replies: 6
Views: 5660

HELP!!!!! Microarrays, molecular cloning

You have been hired to develop a system of Bio-sentinel flowers (this is an actual funded project via homeland security). The idea is that when the plant is exposed to a specific biohazadous compound it will produce red flowers (they normally produce ...

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by dotti321
Sun May 04, 2008 3:06 am
Forum: Genetics
Topic: HELP!!!!! Microarrays, molecular cloning
Replies: 2
Views: 1969

The Fiber Disease

... water. The signal is received by equipment that indicates and/or records the data. In a stationary embodiment of the invention, the biosensor is a sentinel, as shown schematically in FIG. 5 in a typical water supply. A stream 50 is shown cross-sectionally in FIG. 5 as a water source. The water ...

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by London
Wed Aug 16, 2006 4:40 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245148

The Fiber Disease

... organizations have a large number of worldwide networks set up to monitor infectious diseases: http://www.cdc.gov/ncidod/osr/site/sentinel/surv-sys.htm The CDC is in the business of eradicating these things. - John

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by John Kern
Fri Apr 14, 2006 4:23 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245148
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