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  • 1
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    Skin research center (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1989-11-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parrish, J A -- New York, N.Y. -- Science. 1989 Nov 17;246(4932):874.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2814505" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Hospitals ; Humans ; Japan ; Massachusetts ; *Research ; *Skin ; Universities
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Photosynthesis of previtamin D3 in human skin and the physiologic consequences (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-10-10
    Beschreibung: Photosynthesis of previtamin D3 can occur throughout the epidermis in the dermis when hypopigmented Caucasian skin is exposed to solar ultraviolet radiation. Once previtamin D3 is formed in the skin, it undergoes a temperature-dependent thermal isomerization that takes at least 3 days to complete. The vitamin D-binding protein preferentially translocates the thermal product, vitamin D3, into the circulation. These processes suggest a unique mechanism for the synthesis, storage, and slow, steady release of vitamin D3 from the skin into the circulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holick, M F -- MacLaughlin, J A -- Clark, M B -- Holick, S A -- Potts, J T Jr -- Anderson, R R -- Blank, I H -- Parrish, J A -- Elias, P -- AM25395-01/AM/NIADDK NIH HHS/ -- AM27334-01/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 10;210(4466):203-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251551" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Carrier Proteins/metabolism ; Cholecalciferol/*biosynthesis ; Cholestadienols/*biosynthesis ; Dose-Response Relationship, Radiation ; Hot Temperature ; Humans ; Isomerism ; Photochemistry ; Rats ; Skin/cytology/*metabolism ; Ultraviolet Rays ; Vitamin D/metabolism ; Vitamin D-Binding Protein
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Selective photothermolysis: precise microsurgery by selective absorption of pulsed radiation (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1983-04-29
    Beschreibung: Suitably brief pulses of selectively absorbed optical radiation can cause selective damage to pigmented structures, cells, and organelles in vivo. Precise aiming is unnecessary in this unique form of radiation injury because inherent optical and thermal properties provide target selectivity. A simple, predictive model is presented. Selective damage to cutaneous microvessels and to melanosomes within melanocytes is shown after 577-nanometer (3 x 10(-7) second) and 351-nanometer (2 x 10(-8) second) pulses, respectively. Hemodynamic, histological, and ultrastructural responses are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, R R -- Parrish, J A -- R01025395/PHS HHS/ -- New York, N.Y. -- Science. 1983 Apr 29;220(4596):524-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836297" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cricetinae ; Hot Temperature ; Humans ; *Laser Therapy ; Melanins/metabolism ; Melanocytes/ultrastructure ; Microcirculation/surgery ; Microscopy, Electron ; Microsurgery/*methods
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Immunologic inhibition of ultraviolet radiation-induced tumor suppressor cell activity (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1984-05-11
    Beschreibung: Long-term exposure of C3H mice to ultraviolet radiation resulted in the formation of suppressor T cells that recognize ultraviolet radiation-induced regressor skin cancers as a class before the appearance of overt tumors. Administration of monoclonal antibodies to the product of the I-Jk subregion of the major histocompatibility complex or low doses of cyclophosphamide in vivo inhibited the development or activity of these cells. This activity of the monoclonal antibody was eliminated by adsorption on B10.BR (I-Jk) but not B10.D2 (I-Jd) splenocytes. These findings provide evidence that elements expressing the I-J determinant are important in regulating the host response prior to the overt development of ultraviolet radiation-induced skin cancers and suggest novel therapeutic approaches to malignancies or other diseases involving suppressor T cells in their pathogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Granstein, R D -- Parrish, J A -- McAuliffe, D J -- Waltenbaugh, C -- Greene, M I -- 1F32 CA07014-102/CA/NCI NIH HHS/ -- AI 18072/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 May 11;224(4649):615-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6231725" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antibodies, Monoclonal/immunology ; Cyclophosphamide/pharmacology ; H-2 Antigens/immunology ; Mice ; Mice, Inbred C3H ; Neoplasms, Experimental/immunology ; Spleen/cytology ; T-Lymphocytes, Regulatory/drug effects/*immunology/radiation effects ; Ultraviolet Rays
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Effect of Raw Wheat Germ on Nutrition of the Chicken (1963)
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 398-399 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Early experiments confirmed Creek's findings of poor growth and the faecal fat3 was as high as 20 per cent of fat intake in the wheat germ groups. When gluten was given as a substitute for the corn in the diet, however, we found that the birds fed gluten grew slightly better than controls (P 〈 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/199398b0
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Pollination niche separation in a winter annual community (1978)
    Springer
    Oecologia 35 (1978), S. 133-140 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Differences in major selective forces important in early and late successional communities should influence niche breadth and degree of overlap. Early successional species may not experience consistent, strong selection against competition and can be expected to have broader niches with more overlap than later successional species. This paper presents data from 2 early successional winter annuals that show clear niche separation under conditions in which coevolution is unlikely. Lactuca scariola L. and Erigeron annuus (L.) Pers. flower in mid-summer and attract the same insect visitors. Erigeron, the more common species, begins to flower in mid-morning when insect visitors are quite active. Lactuca flowers open earlier in the morning and close just before Erigeron flowers open. The early morning hours are not optimum for Lactuca visitation, as most of the visits occur just before floral closing. Both species can selffertilize without a vector, and Lactuca was introduced from Europe. It is, therefore, not possible that niche separation inflowering time and subsequent time of visit in Erigeron and Lactuca is a result of coevolutionary niche differentiation between the two species. This separation is likely to be a preadaptation resulting from coevolution with other species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00344726
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Nutrient content of Abutilon theophrasti seeds and the competitive ability of the resulting plants (1985)
    Springer
    Oecologia 65 (1985), S. 247-251 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Siblings of Abutilon theophrasti, were grown on a nutrient gradient. The plants grown at higher nutrient levels were larger and produced larger and more seeds than plants grown at lower soil nutrient concentrations. There were no differences in germinability of seeds, but the competitive abilities of resulting plants were markedly different. In two different competition experiments designed to eliminate the effects of genotype, seed size, and germination time, by using synchronously germinated seedlings derived from similar size seed from plants grown at different nutrient levels, we found that plants from seeds produced at higher nutrient levels consistently, outperformed plants from seeds produced at the lower nutrient levels. The dominance of seeds produced at higher nutrient levels may be explained by the fact that they had markedly higher concentrations of nitrogen than did seeds produced at lower soil nutrient levels. The additional advantage of increased seed quality to plants controlling more of the nutrient resource than their neighbors would be expected to accelerate their contributions to the gene pool of the population.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00379224
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    Selective ablation of atheromas using a flashlamp-excited dye laser at 465 nm. (1986)
    National Academy of Sciences
    Details
    Publikationsdatum: 1986-09-01
    Print ISSN: 0027-8424
    Digitale ISSN: 1091-6490
    Thema: Biologie , Medizin , Allgemeine Naturwissenschaft
    Publiziert von National Academy of Sciences
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    Nutrient content of Abutilon theophrasti seeds and the competitive ability of the resulting plants (1985)
    Springer
    Details
    Publikationsdatum: 1985-01-01
    Print ISSN: 0029-8549
    Digitale ISSN: 1432-1939
    Thema: Biologie
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    Pollination niche separation in a winter annual community (1978)
    Springer
    Details
    Publikationsdatum: 1978-01-01
    Print ISSN: 0029-8549
    Digitale ISSN: 1432-1939
    Thema: Biologie
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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