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  • *Access to Information  (1)
  • *Exobiology  (1)
  • MicroRNAs/genetics  (1)
  • American Association for the Advancement of Science (AAAS)  (3)
  • 1
    Publication Date: 2013-12-11
    Description: Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleoclimates and rapid erosion and deposition. The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH, rock-dominated aqueous conditions. Analyses of diagenetic features (including concretions, raised ridges, and fractures) at high spatial resolution indicate that they are composed of iron- and halogen-rich components, magnesium-iron-chlorine-rich components, and hydrated calcium sulfates, respectively. Composition of a cross-cutting dike-like feature is consistent with sedimentary intrusion. The geochemistry of these sedimentary rocks provides further evidence for diverse depositional and diagenetic sedimentary environments during the early history of Mars.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McLennan, S M -- Anderson, R B -- Bell, J F 3rd -- Bridges, J C -- Calef, F 3rd -- Campbell, J L -- Clark, B C -- Clegg, S -- Conrad, P -- Cousin, A -- Des Marais, D J -- Dromart, G -- Dyar, M D -- Edgar, L A -- Ehlmann, B L -- Fabre, C -- Forni, O -- Gasnault, O -- Gellert, R -- Gordon, S -- Grant, J A -- Grotzinger, J P -- Gupta, S -- Herkenhoff, K E -- Hurowitz, J A -- King, P L -- Le Mouelic, S -- Leshin, L A -- Leveille, R -- Lewis, K W -- Mangold, N -- Maurice, S -- Ming, D W -- Morris, R V -- Nachon, M -- Newsom, H E -- Ollila, A M -- Perrett, G M -- Rice, M S -- Schmidt, M E -- Schwenzer, S P -- Stack, K -- Stolper, E M -- Sumner, D Y -- Treiman, A H -- VanBommel, S -- Vaniman, D T -- Vasavada, A -- Wiens, R C -- Yingst, R A -- MSL Science Team -- New York, N.Y. -- Science. 2014 Jan 24;343(6169):1244734. doi: 10.1126/science.1244734. Epub 2013 Dec 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, State University of New York, Stony Brook, NY 11794, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24324274" target="_blank"〉PubMed〈/a〉
    Keywords: Bays ; Calcium Sulfate/analysis/chemistry ; Chlorine/analysis/chemistry ; *Exobiology ; Extraterrestrial Environment/*chemistry ; Ferrosoferric Oxide/analysis/chemistry ; Geologic Sediments/*chemistry ; Halogens/analysis/chemistry ; Hydrogen-Ion Concentration ; Iron/analysis/chemistry ; Magnesium/analysis/chemistry ; *Mars ; Silicates/analysis/chemistry ; Water/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2013-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bolukbasi, Burcu -- Berente, Nicholas -- Cutcher-Gershenfeld, Joel -- Dechurch, Leslie -- Flint, Courtney -- Haberman, Michael -- King, John Leslie -- Knight, Eric -- Lawrence, Barbara -- Masella, Ethan -- McElroy, Charles -- Mittleman, Barbara -- Nolan, Mark -- Radik, Melanie -- Shin, Namchul -- Thompson, Cheryl A -- Winter, Susan -- Zaslavsky, Ilya -- Allison, M Lee -- Arctur, David -- Arrigo, Jennifer -- Aufdenkampe, Anthony K -- Bass, Jay -- Crowell, Jim -- Daniels, Mike -- Diggs, Stephen -- Duffy, Christopher -- Gil, Yolanda -- Gomez, Basil -- Graves, Sara -- Hazen, Robert -- Hsu, Leslie -- Kinkade, Danie -- Lehnert, Kerstin -- Marone, Chris -- Middleton, Don -- Noren, Anders -- Pearthree, Genevieve -- Ramamurthy, Mohan -- Robinson, Erin -- Percivall, George -- Richard, Stephen -- Suarez, Celina -- Walker, Doug -- New York, N.Y. -- Science. 2013 Nov 29;342(6162):1041-2. doi: 10.1126/science.342.6162.1041-b.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Labor and Employment Relations, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24288316" target="_blank"〉PubMed〈/a〉
    Keywords: *Access to Information ; Periodicals as Topic/*economics ; Research/*economics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2011-12-17
    Description: Hox proteins are a metazoan-specific family of transcription factors that are required for developmental patterning. The genomic arrangement of Hox genes into four paralogous clusters is a primitive feature of jawed vertebrates. By using high-throughput sequencing, we demonstrate the absence of all HoxC transcripts from embryos of the shark Scyliorhinus canicula and the skate Leucoraja erinacea and the absence of all HoxC genes and two HoxC-associated microRNAs from the genome of L. erinacea. These data suggest a loss of the entire HoxC cluster in elasmobranch fishes and represent evidence for the natural deletion of an entire Hox cluster in vertebrates.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3264428/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3264428/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, Benjamin L -- Gillis, J Andrew -- Carlisle, Heather R -- Dahn, Randall D -- P20 RR016463/RR/NCRR NIH HHS/ -- P20 RR016463-12/RR/NCRR NIH HHS/ -- P20RR016463/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2011 Dec 16;334(6062):1517. doi: 10.1126/science.1210912.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Kathryn W. Davis Center for Regenerative Biology and Medicine, Mount Desert Island Biological Laboratory, Salisbury Cove, ME 04672, USA. bking@mdibl.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22174244" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Gene Deletion ; Gene Silencing ; Homeodomain Proteins/*genetics ; MicroRNAs/genetics ; Multigene Family ; Sharks/*genetics ; Skates (Fish)/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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