Dictionary » P » Pigment



1. Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified colouring matter ready for mixing with an appropriate vehicle.

2. (Science: physiology) Any one of the coloured substances found in animal and vegetable tissues and fluids, as bilirubin, urobilin, chlorophyll, etc.

3. Wine flavored with species and honey.

(Science: physiology) pigment cell, a small cell containing colouring matter, as the pigmented epithelial cells of the choroid and iris, or the pigmented connective tissue cells in the skin of fishes, reptiles, etc.

Origin: L. Pigmentum, fr. The root of pingere to paint: cf. F. Pigment. See Paint, and cf. Pimento, Orpiment.

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DNA changes?

I agree with Efralin. You should go to the doctor and get tested. Loss of pigment in hair and skin usually associated with malnutrition...

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by Cat
Sat Feb 15, 2014 6:07 pm
Forum: Genetics
Topic: DNA changes?
Replies: 3
Views: 1562

Conflicting results of Gram-Negative unknown

... under non-motile. This means that something is either wrong with my HE results, which I doubt or there is something I'm not connecting about the pigment aspect of the flow chart and my conflicting UREASE AND CITRATE TESTS. My interpretation of the results are listed below as well as a version ...

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by Jrh21854
Sun Dec 01, 2013 8:25 pm
Forum: Microbiology
Topic: Conflicting results of Gram-Negative unknown
Replies: 0
Views: 1994

Re: UV Effect on cell pigmentation (melanocytes)

it is based on the intensity of vu rays as the pigment melanin is purely designed for protection from uv rays is is deffinetey effected by the intensity of the light

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by rat554
Sat Mar 02, 2013 6:52 pm
Forum: Cell Biology
Topic: UV Effect on cell pigmentation (melanocytes)
Replies: 1
Views: 1839

UV Effect on cell pigmentation (melanocytes)

Does UV level increase the rate of pigmentation in skin? ( Stimulation of melanocytes...) Or if the UV level is high enough, ie 4 and above, is pigmentation purely based on time exposure to sunlight if the UV level is 10+. And would this be ...

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by John3373
Wed Feb 20, 2013 1:41 pm
Forum: Cell Biology
Topic: UV Effect on cell pigmentation (melanocytes)
Replies: 1
Views: 1839

Beet Root Pigment

Oh k, so its properties are unknown? Why? Found these http://www.biology-online.org/biology-forum/about4404.html?hilit=Pigment+cells http://madsci.org/posts/archives/2004-03/1080223472.Cb.r.html http://www.coursework.biz/Essays/GCSE/Biology/550/ My go to is NCBI 0_o

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by jinx25
Mon Oct 08, 2012 8:05 am
Forum: General Discussion
Topic: Beet Root Pigment
Replies: 7
Views: 3674
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