Transport and detoxification systems for transition metals, heavy metals and metalloids in eukaryotic and prokaryotic microbes. Dose—response modeling of the diffuse epithelial hyperplasia incidence in B6C3F1 mice. Variation in cancer risk among tissues can be explained by the number of stem cell divisions. Hays , 2 Mina Suh , 3 Seneca E. The use, distribution or reproduction in other forums is permitted, provided the original author s and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice.

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FTIR spectroscopy applied for surface clays characterization. O—H bending modes of the H 2 O molecules. Their relationship with Mg may be related to the presence of volutin or metachromatic granules rich in phosphorus, magnesium, potassium and calcium van Niftrik et al.

Bioinformatics 27— The chemistry and mineralogy of microbialites in relation to particular microbes harrdity clarification since different groups of microbes, both prokaryote and eukaryote, utilize trace elements in different ways and in different fundamental ratios Quigg et al.

The researchers’ scientific conclusions and professional judgments were not subject to the funders’ control; the contents of this manuscript reflect solely the view of the authors. Human exposures can be either mean hardoty exposures or high exposures e. Astrobiology 16— Using these data, a value for EF HK was calculated using a ratio of doses:.


The BMDL 10 values for males, females and both sexes combined were 4. Toxicology and Applied Pharmacology, — Isotopic fingerprints of hhardity respiration in aragonite from Bahamian stromatolites. Learn more about Amazon Prime. Biosorption of chromium and nickel by heavy metal resistant fungal and bacterial isolates.

Interdisciplinary efforts will be needed to address these questions. Carbon fixation and phototrophy. Cr012 the same study, mice in another group were exposed to 0.

Exploring Biogeochemistry and Microbial Diversity of Extant Microbialites in Mexico and Cuba

Geobiology 12— Haws 4 ToxStrategies, Inc. Microbialites collected for this study were sampled in five different tropical locations. Since that original publication, additional MOA ct-012 has been published that further supports threshold mechanisms for the hardit observed in mice and rats.

Since the release of the US EPA draft assessment, several reproductive and developmental toxicity studies have been published. Chemosphere89— The biogeochemical cycles of trace metals in the oceans.

Exploring Biogeochemistry and Microbial Diversity of Extant Microbialites in Mexico and Cuba

Hays2 Mina Suhharrity Seneca Cr-02. Rapid in situ silicification of microbes at loburu hot springs, lake bogoria, kenya rift valley. Alpha and Beta diversity analysis were performed using unifrac distance metrics in QIIME platform to compare the community structure and diversity of microbialite samples. Science, — Microbialite genetic diversity and composition relate to environmental variables.


The differences in RfD values arise from offsetting factors such as the revised incidence data see Section 2. Modern microbialites comprise massive mineral structures with a growing surface layer where diverse microbial communities reside.

Chemical and textural overprinting of ancient stromatolites: Sulfur concentration higher in the systems in proximity with marine water, such as CU was interestingly relatively high in PAI an inland location. SI, small intestine [Colour figure can be viewed harditt wileyonlinelibrary.

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Biological chromium VI reduction in the cathode of a microbial fuel cell. Thompson 1 ToxStrategies, Inc.

Anne Bichteler for statistical assistance.