Aqueous alteration in the Northwest Africa 817 (NWA 817) Martian meteorite

The Northwest Africa (NWA) 5790 meteorite: A mesostasis-rich nakhlite with little or no Martian aqueous alteration

Northwest Africa (NWA) 5790 is the most recently discovered member of the nakhlite group. Its mineralogy differs from the other nakhlites with a high abundance mesostasis (38.1 3.6 vol%) and scarcity of olivine (4.0 2.2 vol%). Furthermore, zoning of augite phenocrysts, and other petrographic and chemical characteristics suggest that NWA 5790 samples the chilled margin of its parent lava flow/si...

Light Lithophile Element Trends in Nakhlite Nwa 817 Pyroxenes: Implications for Water on Mars

Abundances of LLE (Li, B, Be) are strongly zoned in augite grains of the NWA 817 nakhlite [1,2]. Be and B consistently increase to grain rims (like Fe* and Ti), consistent with their geochemical behavior as incompatible elements. Li abundances increase outward in some rims, but decrease significantly in others. The cause of this bipolar behavior is not clear. LLE are not zoned in augites in the...

Dmm020362 817..829

Crohn’s disease (CD) is associated with delayed neutrophil recruitment and bacterial clearance at sites of acute inflammation as a result of impaired secretion of proinflammatory cytokines by macrophages. To investigate the impaired cytokine secretion and confirmour previous findings, weperformed transcriptomic analysis in macrophages and identified a subgroup of individuals with CD who had low...

Dev105536 817..831

Decades of work have identified the signaling pathways that regulate the differentiation of chondrocytes during bone formation, from their initial induction from mesenchymal progenitor cells to their terminal maturation into hypertrophic chondrocytes. Here, we review how multiple signaling molecules, mechanical signals and morphological cell features are integrated to activate a set of key tran...

Multiple Aqueous Events in the Nakhlite Meteorite North West Africa (nwa)