20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
1 959 kr
I lager, skickas inom 4 till 5 vardagar
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
Utforska miljontals ljud- och e-böcker och upptäck stories i alla format. Med ett abonnemang får du 20% rabatt på fysiska böcker!
Although ingestion of high levels of arsenic is believed to cause certain cancers, estimates of cancer risk resulting from exposure to low levels of arsenic are the subject of considerable debate. An improved understanding of arsenic toxicity and the dose-response relationship for relatively low levels of arsenic could improve the risk assessment process. The overall objective of this study was to contribute to a better understanding of arsenic health effects. A specific aim was to investigate the cellular response of exposure to arsenic. This includes the analysis of cells treated with arsenic alone or in combination with other DNA-damaging agents in order to identify mechanisms of DNA damage, the influence of arsenic on DNA repair, and potential critical genes responsible for repair of DNA damage. The researchers conducted the following steps as part of the project approach: 1. Measured cell killing by arsenic compounds, using human and hamster cells harboring mutations in specific DNA repair genes, to determine if arsenic kills cells by causing DNA damage and, if so, which DNA repair pathway(s) would be involved in repairing the damage. 2. Measured cell killing to assess the relationship between ionizing radiation and arsenic, i.e., to define if the combination of the two treatments is additive or synergistic. 3. Conducted assays for DNA damage using capillary electrophoresis laser-induced fluorescence. 4. Monitored the effects of arsenite and benzo[a]pyrene diol epoxide (BPDE) in the induction and repair of BPDE-DNA adducts in A549 cells. 5. Performed arsenic speciation analysis and test species stability. 6. Measured the interaction of arsenicals with metallothionein Project highlights include: Cells from the cancer-prone disorder, Ataxia telangiectasia, were hypersensitive to killing by arsenite, but this may not be due to DNA damage. The toxicity of the combination of arsenite and gamma-radiation was additive, not synergistic, implying that radiation and arsenic kill cells by distinct mechanisms. Arsenite enhanced the formation of benzo[a]pyrene-DNA adducts but the kinetics of repair remained unaltered. Arsenite, therefore, either renders DNA more accessible to DNA damaging agents or inhibits other processes that inactivate benzo[a]pyrene metabolites, such as reaction with glutathione. Trivalent methylation metabolites of arsenic readily reacted with metallothionein, a small cysteine-rich protein. Through this project, analytical techniques were developed for the determination of arsenic species. These techniques are useful for monitoring the occurrence of arsenic. They are also useful for determining exposure and metabolism of arsenic compounds ingested from drinking water. It is also important to recognize that genetic variation may make some individuals more sensitive to the harmful effects of arsenic. Originally published by AwwaRF for its subscribers in 2004. This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
1 959 kr
I lager, skickas inom 4 till 5 vardagar
David B. Weishampel, David E. Fastovsky
Harriet Rix
Richard O. Prum
Editorial Committee of the Madrid Code
Jennifer Doudna, Samuel Sternberg
Stefano Mancuso
Richard Edmonds
Martin Peterson
Bodhisatta Hajra
The Makers of the Raspberry Pi Official Magazine
Mark Bollman
Jakow Trachtenberg
Grace Lindsay
Professor Tim Spector
Cecil A. Hewett
Delano Steenmeijer, Jens Bezemer, Joel Meter, Simon Phillipson, Ted Stryk
Frank R. Spellman
Shin Takahashi
Construction Industry Training Board (CITB)
James G. Speight
Joel Levy
Simon Schaffer, Steven Shapin
Sarah Easter Collins
Frida Skybäck
Liz Moore
Colleen Hoover
Kristin Fägerskjöld
Armando Lucas Correa
Sharon Bolton
Ruth Lillegraven
Santa Montefiore
Kelly Rimmer
Martha Hall Kelly
Svenja O'Donnell
Nathan Harris
Holly Jackson
Louise Boije af Gennäs
Tina Norin
Kristin Fägerskjöld
Pernilla Lindroos
Anna Lönnqvist
Jessie Burton
Malin Nordström
Marc Levy
Emma Donoghue
Snezana Lindskog, Andie Lindskog
Tony Samuelsson
Andrev Walden
Tina Harnesk
Kathrine Nedrejord
Anthony Doerr
Marieke Lucas Rijneveld
Lauren Groff
Claire Messud
Claire Lynch
Sebastian Barry
Ray Celestin
Simon Stranger
Alice Munro
Linda Boström Knausgård
Marit Kapla
Ulf Stark
Sarah Easter Collins
Liz Moore
Ursula Scavenius
Colleen Hoover
Michel Jean
