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Cross-section

Cross-section

(Science: physics) Usually refers to the (apparent) area presented by a target particle to an oncoming particle (or electromagnetic wave). This measures the probability of an interaction occuring. For typical interactions between ions and electrons, or between two nuclei, these cross sections are generally measured in barns.

(Science: anatomy) a transverse cut through a structure or tissue. The opposite of a cross-section is a longitudinal section. By analogy, a study may be cross-sectional or longitudinal.


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Conditional knockout mouse

Hello, I am using transgenic mouse where my gene of interest is floxed. When I cross this mouse line with Tamoxifen inducible Cre line, CAGGCre-ERTM, I get mice with with heterozygous Cre and floxed gene of interest. The experimental plan was to isolate myoblasts ...

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by aji01
Wed Feb 20, 2013 11:25 am
 
Forum: Genetics
Topic: Conditional knockout mouse
Replies: 1
Views: 109

Genetics question

Can some one help me with this question? In the fox, there are 9 coat colors: red, standard silver, Alaskan silver, double-black, smoky red, cross-red, blended-cross, substandard silver, and sub-Alaskan silver. A red fox was crossed with a double-black fox and their offspring were then crossed ...

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by ashanair70
Tue Feb 12, 2013 8:47 pm
 
Forum: Genetics
Topic: Genetics question
Replies: 0
Views: 189

Re: Lipid Bilayers vs Micelles

... this is the simplest structure that maximizes hydrophobic/philic interaction. In phospholipids, however, the hydrophobic tails have a greater cross-sectional area than the heads, and so they cannot form stable micelles - in other words, the volume of the interior of a hypothetical phospholipid ...

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by squillss
Wed Feb 06, 2013 9:34 am
 
Forum: Molecular Biology
Topic: Lipid Bilayers vs Micelles
Replies: 3
Views: 3890

How will conc. on 2 sides be equal when osmosis stops?

If the membrane is semipermeable and the solute cannot cross the membrane, the concentrations will not be the same. However, the osmotic pressure could be the same (if there was not only pure water, but some solution).

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by JackBean
Tue Dec 18, 2012 9:02 pm
 
Forum: Physiology
Topic: How will conc. on 2 sides be equal when osmosis stops?
Replies: 4
Views: 896

drosophila experiment help

The previously described mutations were observed in the F1 groups (one vial with the body mutation and one vial with the eye mutation). Then we cross bred the two batches, using the males of the body stock to virgin females of the eye stock, and vice versa (everyone had different flies with different ...

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by jftustin42
Fri Nov 16, 2012 4:43 pm
 
Forum: Genetics
Topic: drosophila experiment help
Replies: 3
Views: 496
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