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vitamin-A
Results 61-80 of 223.
- Isoprene
Isoprene Isoprene is the chemical 2-methyl-1,3-butadiene: This is a common structural motif in biological systems. The terpenes (for example, the carotenes are tetraterpenes) are derived from isoprene, as is Coenzyme Q. Also derived from isoprene are phytol, retinol (vitamin A) , tocopherol (vitamin E), dolichols, and squalene. Heme A has an isoprenoid tail, and lanosterol, the sterol precursor in animals, is derived from squalene and hence from isoprene. The functional isoprene units in
Sources:
pheeds[Rank #17],
Relevancy Score: 105. [Preview] [Open in full window]
- Vitamin A (retinol) - MayoClinic.com
Vitamin A is a fat-soluble vitamin that is derived from two sources: ... A major biologic function of vitamin A (as the metabolite retinal) is in the visual cycle. ...
Sources:
altavista[Rank #17],
Relevancy Score: 105. [Preview] [Open in full window]
- Isotretinoin
Isotretinoin Isotretinoin is a Vitamin A derivate used for the treatment of severe acne. It is sold by Roche and goes under the trade names Accutane and Roaccutane. It causes foetal malformations and gravidity is strictly forbidden while taking the drug. Isotretinoin works by reducing the sebacious gland activity amd a histiologically demonstrated
Sources:
pheeds[Rank #18],
Relevancy Score: 105. [Preview] [Open in full window]
- Fat Soluble Vitamins: Vitamin A, D, E, & K in Dogs
The function, source, requirements, supplements, deficiencies, and toxicities of the fat-soluble vitamins vitamins A, D, E, and K in dogs.
Sources:
altavista[Rank #18],
Relevancy Score: 105. [Preview] [Open in full window]
- It's It
(06:49) Justin Robertson Mix "Planet" (04:42) Graham Massey Planet Suite Pt 2 "Gold" (06:10) Todd Terry Mix "Water" (04:13) Bryan 'Chuck' New Mix "Regina" (05:12) Sugarcubes Mix "Mama" (05:09) Mark Saunders Mix "Pump" (04:30) Marius de Vries Mix "Hit" (07:10) Tony Humphries Sweet & Low Mix "Birthday" (06:42) Tommy D Mix "Coldsweat" (04:12) DB/BP Mix "Vitamin" (03:54) E Mix
Sources:
pheeds[Rank #19],
Relevancy Score: 105. [Preview] [Open in full window]
- Vitamin A
Vitamin A or retinol has a structure depicted to the right. ... Vitamin A does not occur in plants, but many plants contain carotenoids such as beta-carotene that can be ...
Sources:
altavista[Rank #19],
Relevancy Score: 105. [Preview] [Open in full window]
- Henrik Carl Peter Dam
Henrik Carl Peter Dam Henrik Carl Peter Dam (February 21, 1895 - 1976) was a Danish biochemist and physiologist. He was born and died in Copenhagen. He was awarded the Nobel Prize in Medicine in 1943 for his work in discovering vitamin K and its role in human physiology.
Sources:
pheeds[Rank #20],
Relevancy Score: 105. [Preview] [Open in full window]
- Vitamin A Information
Vitamin A is essential for growth and life, taking part not only in vision but also in developmental processes that begin early in embryogenesis. ...
Sources:
altavista[Rank #20],
Relevancy Score: 105. [Preview] [Open in full window]
- Heidelberg Appeal
objectives of a scientific ecology for a universe whose resources must be taken stock of, monitored and preserved." Its 72 Nobel laureates include 49 who also signed the "World Scientists' Warning to Humanity," which was circulated that same year by the liberal Union of Concerned Scientists (UCS) and attracted the majority of the world's living Nobel laureates in science along with some 1,700 other leading scientists. In contrast with the vagueness of the Heidelberg Appeal, the "World Scientists' Warning" is a very explicit environmental manifesto, stating that "human beings
2000
and the natural world are on a collision course" and citing ozone
Sources:
pheeds[Rank #21],
Relevancy Score: 104. [Preview] [Open in full window]
- Vitamin A Saga
Discussion of the value of true vitamin A, found only in animal foods, vs. the health establishment's push to promote beta-carotenes as a sufficient source of vitamin A.
Sources:
altavista[Rank #21],
Relevancy Score: 104. [Preview] [Open in full window]
- Healthy Foods that Contain Vitamin A
Everything that you really need to know about vitamin A, beta-carotene, and healthy foods that contain both.
Sources:
altavista[Rank #22],
Relevancy Score: 104. [Preview] [Open in full window]
- Hormone
Examples of exocrine glands are salivary or sweat glands; examples of endocrine glands are thyroid and adrenal glands. With our growing understanding of intricacies of homeostasis regulation the term "endocrine" is becoming rather of historical value. Every cell is capable of producing a vast number of regulatory molecules - tissue hormones, neurotransmitters, cytokines and many more. The classical endocrine glands and their hormone products are only better specialized to serve regulation on the overall organism level. Nevertheless they can in many instances be used in other ways or only on the tissue level. The most important hormones in humans include: adrenaline
Sources:
pheeds[Rank #22],
Relevancy Score: 104. [Preview] [Open in full window]
- Howell-Evans syndrome
is an extremely rare condition in which the skin of the palms of the hands, and soles of the feet, are affected (hyperkeratosis). The effects on the palms and soles is called tylosis, and in Howell-Evans syndrome, there is a predisposition to oesophageal cancer. Howell-Evans syndrome was described in 1996 as being identical with palmoplantar ectodermal dysplasia type III. The skin is treated with a keratolytic (such as salicylic acid) to dissolve the excess skin, and systemic treatment with retinoids (derivatives of Vitamin A) may be given.
Sources:
pheeds[Rank #23],
Relevancy Score: 104. [Preview] [Open in full window]
- Vitamin A in your pregnancy diet | BabyCenter
Learn why you need vitamin A when you're pregnant, how much vitamin A you need in your pregnancy diet, food sources, and when you need a supplement.
Sources:
altavista[Rank #23],
Relevancy Score: 104. [Preview] [Open in full window]
- Human skin color
the skin. Melanin comes in two types: phaeomelanin (red to yellow) and eumelanin (dark brown to black). Both amount and type are determined by 4-6 genes which operate under incomplete dominance. One copy of each of those genes is inherited from the father and one from the mother. Each gene comes in several alleles, resulting in a great variety of different skin colors. Dark skin protects against skin cancer, mutations in skin cells induced by ultraviolet light. Light-skinned persons have about a tenfold greater risk of dying from skin cancer under equal sun conditions. Furthermore, dark skin prevents UV-A radiation from
Sources:
pheeds[Rank #24],
Relevancy Score: 104. [Preview] [Open in full window]
- Vitamin A - Vitamins - Vitamins Supplements Herbs - The ...
Great prices on all your favorite Vitamin A products. Up to 50% lower than you'll find elsewhere + get automatic points toward free merchandise. Shop now and save.
Sources:
altavista[Rank #24],
Relevancy Score: 104. [Preview] [Open in full window]
- Ultraviolet
The radiation ionizes DNA molecules in skin cells, causing covalent bonds to form between adjacent thymine bases, producing thymidine dimers. Thymidine dimers do not base pair normally, which can cause distortion of the DNA helix, stalled replication, gaps, and misincorporation. These can lead to mutations, which can result in cancerous growths. The mutagenicity of UV radiation can be easily observed in bacteria cultures. This cancer connection is the reason for concern about ozone depletion and the ozone hole. As a defense against UV light, the body tans when exposed to moderate (depending on skin type) levels of radiation by releasing the
Sources:
pheeds[Rank #25],
Relevancy Score: 104. [Preview] [Open in full window]
- Vitamin A
Vitamin A is extremely important to maintain healthy eye sight and to keep a functioning immune system.
Sources:
altavista[Rank #25],
Relevancy Score: 104. [Preview] [Open in full window]
- Genetically modified food
their popular herbicide Roundup, and Bt corn. There was a brief interlude where Monsanto flirted with introducing a technology called terminator into food crops, which produced plants that grew sterile seeds. Monsanto claimed this was necessary to protect their intellectual property rights, since they were licensing the technology to farmers, and would also have provided a measure of protection against volunteer corn carrying unwanted traits, a major concern that arose during the Starlink debacle. Public outcry about the undue influence that the terminator gene would give to Monsanto, particularly in less developed nations where seed saving is more common, led to
Sources:
pheeds[Rank #26],
Relevancy Score: 103. [Preview] [Open in full window]
- Vitamin A
Vitamin A may be required for normal reproductive function, with influences on the function and development of sperm, ovaries and placenta. ...
Sources:
altavista[Rank #26],
Relevancy Score: 103. [Preview] [Open in full window]
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