Search Results - (Author, Cooperation:J. A. Helms)
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1Latest Papers from Table of Contents or Articles in PressB. Salmon; B. Liu; E. Shen; T. Chen; J. Li; M. Gillette; R. C. Ransom; M. Ezran; C. A. Johnson; A. B. Castillo; W. J. Shen; F. B. Kraemer; A. A. Smith; J. A. Helms
Nature Publishing Group (NPG)
Published 2018Staff ViewPublication Date: 2018-04-17Publisher: Nature Publishing Group (NPG)Electronic ISSN: 2045-2322Topics: Natural Sciences in GeneralPublished by: -
2Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-05-17Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
3Latest Papers from Table of Contents or Articles in PressK. C. Wang ; Y. W. Yang ; B. Liu ; A. Sanyal ; R. Corces-Zimmerman ; Y. Chen ; B. R. Lajoie ; A. Protacio ; R. A. Flynn ; R. A. Gupta ; J. Wysocka ; M. Lei ; J. Dekker ; J. A. Helms ; H. Y. Chang
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-03-23Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Cell Line ; Cells, Cultured ; Chromatin/*genetics/metabolism ; DNA, Intergenic/genetics ; Embryo, Mammalian/metabolism ; Fibroblasts/metabolism ; Gene Expression Regulation, Developmental/*genetics ; Gene Knockdown Techniques ; Genes, Homeobox/*genetics ; Histone-Lysine N-Methyltransferase/metabolism ; Histones/chemistry/metabolism ; Humans ; Lysine/metabolism ; Methylation ; Mice ; Molecular Sequence Data ; Multigene Family/genetics ; Organ Specificity ; RNA, Untranslated/*genetics ; Transcription, GeneticPublished by: -
4Articles: DFG German National LicensesStaff View
ISSN: 1365-3040Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: We investigated the effects of acid rain and ozone on respiration rates of 1-year-old and current-year foliage of half-sib seedlings and mature clones of a ponderosa pine genotype by measurement of foliar metabolic heat rates. Two rain regimes (pH 5-1 and 3-0) were applied weekly to foliage only, from January to April 1992. Two ozone regimes (ambient and twice-ambient) were applied from September 1991 to November 1992. Metabolic heat rate was measured in April on 1-year-old foliage, in June on both 1-year-old and current-year foliage, and in November on current-year foliage in 1992. Except for current-year foliage in June, the metabolic heat rate was calculated per unit of both foliar dry mass and N mass. In seedlings, both measures of metabolic heat rate increased in late June for 1-year-old foliage exposed to twice-ambient ozone, and in November for current-year foliage exposed to the combination of twice-ambient ozone and pH 3-0 rain. In mature trees, metabolic heat rate was not affected significantly by ozone, rain acidity, or their interaction. In June, when both 1-year-old and current-year tissues were examined, the metabolic heat rate of expanding, current-year foliage was higher than that of fully expanded, 1-year-old foliage regardless of plant age or treatment combination.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] To artists, the face is a mirror of the soul. To biologists, the face reflects remarkable structural diversity — think of bulldogs and wolfhounds or galapagos finches. How do such variations in skeletal form arise? Do the same mechanisms control skeletogenesis elsewhere in the body? The ...Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1432-0878Keywords: Key wordsgli3 ; Ωtalpid ; extra-toes ; Sonic hedgehog ; Retinoic acid ; Development ; Birth defectsSource: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Abstract Recent evidence indicates that many molecules involved in generating and patterning the limbs also play a role during craniofacial morphogenesis. On the surface, this is an unexpected finding given that these regions of the body have separate evolutionary origins, are composed of different embryonic tissues, and are quite dissimilar in their anatomy. Results from several experiments involving Sonic hedgehog and retinoic acid point to a remarkable conservation of the signaling pathways mediated by these morphogens across multiple organ systems. Moreover, mutants such as the extra-toes and doublefoot mouse, and the talpid chicken also provide insights on common developmental processes that underlie the formation of the limbs and face. The identification of highly conserved aspects of morphogenesis is important for understanding fundamental mechanisms of development, as well as for revealing the common denominator of countless birth defects and providing new strategies for their prevention and cure.Type of Medium: Electronic ResourceURL: