Dictionary » C » Contrast



a dye injected intravenously during x-ray studies, for example CT, to enhance the image of a tumour. In MR studies, the contrast is called gadolinium. The use of contrast may rarely result in some adverse effects: it also increases the cost (but also accuracy in many cases) of the scan.

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I have got some BIG issues! forgive the long post

... extended haplotypes could be evolutionary conserved and are often refereed to as ancestral haplotypes. The allelic diversity of MHC genes is, in contrast to diversity in TCR and Ig genes, not manifest within, but among, persons in a population. The MHC polymorphism in the population might be ...

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by saddy51
Sun Jan 04, 2015 10:39 am
Forum: Genetics
Topic: I have got some BIG issues! forgive the long post
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Views: 1906

Could Hardy-Weinberg terminology be more precise?

... of causes? Natural selection and genetic drift primarily concern whether individuals reproduce, and subsidiarily whether individuals survive. In contrast, mate selection concerns not only whether , but also with whom an individaul mates. Gene flow too concerns the 'with whom' question of mating, ...

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by wildfunguy
Wed Nov 19, 2014 4:56 pm
Forum: General Discussion
Topic: Could Hardy-Weinberg terminology be more precise?
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Views: 607

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by Filbdhebabnm
Wed Jul 09, 2014 10:16 am
Forum: Microbiology
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Compare and contrast between Myxomycota and Eumycota.

Compare and contrast between Myxomycota and Eumycota. I have done research but to no avail, please help me about the question above.

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by Rizwaankhan
Mon Dec 30, 2013 1:37 pm
Forum: Human Biology
Topic: Compare and contrast between Myxomycota and Eumycota.
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... a)The technique is based on differential penetration of X-rays into different tissues. b)Blood vessels can be highlighted without the need of a contrast medium. c)Requires subtraction techniques to produce a clear image of blood vessels. d)It does not allow constant imaging of blood vessels ...

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by zak
Sat Dec 28, 2013 4:43 pm
Forum: Human Biology
Topic: fluoroscopy
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