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The expression pattern of pannexin1, a gene coding for a protein that forms gap junction channels, was studied as both mRNA and protein in the CNS of adult mouse. Pannexin1 was widely expressed in the CNS by neuronal cell types but not glial cells, except for Bergmann glial cells of the cerebellar cortex. Cells positive to Ca-binding proteins, principally parvalbumin, but also calbindin and calretinin,...
Prior studies have recently demonstrated a positive linear covariance in the Sr and Mg contents of abiotic marine carbonates such that the slope of this relation is dependent upon the Sr/Mg ratio of seawater at the time of precipitation. Samples of ancient abiotic marine calcite cements that have undergone diagenesis through alteration by meteoric waters exhibit similar linear trends that range from...
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