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1. The act of cutting, or separation by cutting; as, the section of bodies.

2. A part separated from something; a division; a portion; a slice. Specifically:

A distinct part or portion of a book or writing; a subdivision of a chapter; the division of a law or other writing; a paragraph; an article; hence, the character, often used to denote such a division. It is hardly possible to give a distinct view of his several arguments in distinct sections. (locke)

A distinct part of a country or people, community, class, or the like; a part of a territory separated by geographical lines, or of a people considered as distinct. The extreme section of one class consists of bigoted dotards, the extreme section of the other consists of shallow and reckless empirics. (Macaulay)

One of the portions, of one square mile each, into which the public lands of the united states are divided; one thirty-sixth part of a township. These sections are subdivided into quarter sections for sale under the homestead and preemption laws.

3. (Science: geometry) The figure made up of all the points common to a superficies and a solid which meet, or to two superficies which meet, or to two lines which meet. In the first case the section is a superficies, in the second a line, and in the third a point.

4. A division of a genus; a group of species separated by some distinction from others of the same genus; often indicated by the sign .

5. A part of a musical period, composed of one or more phrases. See Phrase.

6. The description or representation of anything as it would appear if cut through by any intersecting plane; depiction of what is beyond a plane passing through, or supposed to pass through, an object, as a building, a machine, a succession of strata; profile.

In mechanical drawing, as in these Illustrations of a cannon, a longitudinal section (a) usually represents the object as cut through its center lengthwise and vertically; a cross or transverse section (b), as cut crosswise and vertically; and a horizontal section (c), as cut through its center horizontally. Oblique sections are made at various angles. In architecture, a vertical section is a drawing showing the interior, the thickness of the walls, ets, as if made on a vertical plane passed through a building.

(Science: mathematics) angular sections, an instrument to aid in drawing a series of equidistant parallel lines, used in representing sections. Thin sections, a section or slice, as of mineral, animal, or vegetable substance, thin enough to be transparent, and used for study under the microscope.

Synonym: part, portion, division.

Section, part. The english more commonly apply the word section to a part or portion of a body of men; as, a section of the clergy, a small section of the Whigs, etc. In the united states this use is less common, but another use, unknown or but little known in England, is very frequent, as in the phrases the eastern section of our country, etc, the same sense being also given]] to the adjective sectional as, sectional feelings, interests, etc.

Origin: L. Sectio, fr. Secare, sectum, to cut; akin to E. Saw a cutting instrument: cf. F. Section. See Saw, and cf. Scion, Dissect, Insect, Secant, Segment.

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RNA isolation from brain sections

I'm looking to isolate RNA from brain sections under two conditions. First are punches from fresh vibratome slices. I've been told that the time it takes to cut the sections and then punch them is too long for good RNA isolation. Is this true? ...

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by protoemics
Fri Mar 20, 2015 2:19 am
Forum: General Discussion
Topic: RNA isolation from brain sections
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Views: 37

Will antibody staining work on mouse quad sections

I stained sections with hematoxylin first and now want to do antibody staining. Will it work?

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by 2444256703
Wed Mar 11, 2015 8:32 am
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Topic: Will antibody staining work on mouse quad sections
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Methylene Blue Solution use in staining variety of bacteria?

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by scytek
Sun Feb 22, 2015 9:22 am
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Topic: Methylene Blue Solution use in staining variety of bacteria?
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Re: Bio Research Paper Writing

... or perhaps I just want to see a summary of the paper to determine if it is relevant to my study. To this end, many journals require the following sections, submitted in the order listed, each section to start on a new page. There are variations of course. Some journals call for a combined results ...

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Fri Jan 30, 2015 7:15 am
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Re: Mitochondrial DNA

... "traits" like the distinct phenotypes of Mendel's pea plants. http://www.umdf.org/site/pp.aspx?c=8qKOJ0MvF7LUG&b=7934627 Read the sections on genocopies and phenocopies.

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by wildfunguy
Wed Nov 19, 2014 8:18 pm
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