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Restriction Endonucleases Undergo Rigorous QC Testing to Ensure Optimal Performance
Stratagene Restriction endonucleases are used in many molecular biology protocols,making the functional purity of critical importance. Each restriction enzymepreparation must be free of contaminants that can potentiall...Evelyn McGown, Ph.D., Jinfang Liao, M.D., Ph.D., Mary Kassinos, Irina Osetinsky and Jayne Hesley, Molecular Devices Corporation, 1311 Orleans Dr., Sunnyvale, CA 94089. Fluorescent proteins have become enormously popular as tools for monitoring biological events in vivo. They can be cloned in a diverse range of cells and org...
Measurement of proteasome inhibition in live cells in Molecular Devices microplate fluorometers
Proteins inside eukaryotic cells exist in a dynamic state, in a highly-regulated balance between synthesis and degradation. Whereas prot...1 GFP (Green Fluorescent Protein) is an extremely stable protein of 238 amino acids produced by the jellyfish that fluoresces in the lower green region of the visible spectrum....
October 1999 Molecular beacons are fluorogenic oligonucleotide probes developed by Kramerand associates to detect specific nucleic acids in homogeneous solutions. They are single-stranded oligonucleotides that exist in a hairpin shape because of thecomplementary arms at the ends which bind together to form a stem....
Protein concentration is commonly estimated by measuring the absorbance at 280 nm and calculating the concentration using the extinction coefficient of the protein. The procedure is feasible because extinction coefficients are typically obtained using standard cuvettes with a fixed 1 cm pathlength. Extinction-based protein assays can also...
UV Absorbance Measurements in SpectraMax Microplate Spectrophotometers MaxLine Application Note #32)
Molecular Devices Corporation. 7/99 In 1994, Molecular Devices introduced SPECTRAmax , the first microplate reader equipped with a monochromator, rather than bandpass filters, for wavelength selection. It was also the first microplate reader capable of measuring absorbance below 340 nm. These new features transformed the micropl...Real pulse of the economy? Check real estate foreclosures
annual forecast for this year, I thought it would be a good idea to go back and look at the foreclosures on houses. You would think that by now the traction of the economy would grip and people would start to be more financially secure, but it does not look tha...Quantitative determination of DNA synthesis in cellcultures is now a routine procedure in many laboratories.Protocols are available for various applications,especially in cell culture systems. The effects of growthfactors, inhibition of cell division by exogenous factor...
Cell Proliferation and Viability Measurement
The quantification of cellular growth, including proliferationand viability, has become an essential tool in anylaboratory working on cell-based studies. Such techniquesenable not only the optimization of cell cultureconditions, but also the determination of growth factorand...This application note describes how the Agilent 2100 bioanalyzer canbe used in combination with Standardized RT (StaRT)-PCR reagentsfrom Gene Express National Enterprises (G.E.N.E.), Inc. (Huntsville,AL, USA) to obtain highly reproducible, standardized gene expressionme...
Apoptosis represents a gene-directed, morphologically and biochemically distinct form of programmed cell death. Inappropriate control of apoptosis is associated with a variety of disease states such as cancer, AIDS, neurode...
SPA Imaging Beads • LEADSeeker • cAMP • receptor binding assay SPA Imaging Assays are homogeneous immunoassays based on the coupling of one assay component to an SPA Imaging Bead in order to generate a signal. Polystyrene (PS) SPA Imaging Beads coated with donkey anti-rabbit antibody enable the immobilization of...
LabVIEW for Measurement and Data Analysis
housands of engineers and scientists rely on LabVIEW for a variety of applications: test and measurement, process control and automation, monitoring and simulation. LabVIEW is the tool of choice due to its unparalleled connectivity to instruments, powerful data acquisition capabilities, natural dataflow-based graphical programming interface, scalability, and overall function comp...The atmospheric pressure photoionization source, PhotoSpray ion source (Robb, Covey and Bruins1) uses photons to ionize large quantities of a dopant molecule added along with the vaporized mobile phase. Analyte molecules are efficiently ionized through secondary reactions initiated by the charged dopant. This new tec...
This application note illustrates an improved method to quantitate Nnitrosamines in baby bottle teats using APCI-MS. Six rubber nipple formulations were analyzed. Two formulations were composed of natural rubber, two were composed of a synthetic silicone polymer and the remaining two were composed of a synthetic polypropylene. The natural rubber formulations were found to have a signi...
Screening of Corticosteroids in Urine by Negative Atmospheric Pressure Chemical Ionization LC/MS/MS
Corticosteroids are a class of components often abused and misused in sport. They are very potent drugs in the treatment of inflammations and asthma [1]. Corticosteroids can have an effect on the nervous system and can improve an athletes...SmithKline Beecham Pharmaceuticals, UK FlashPlate is a 96-well white polystyrene microplate with scintillant-coated wells designed for highvolume, in-plate radiobinding assays. This study investigates the use of FlashPlate as a platform for the measurement of G-protein act...
SmithKline Beecham Pharmaceuticals, UK Due to recent technologies in the pharmaceutical industry that have resulted in an increase in the production of potential drug candidates, it has become vital that screening assays are high throughput. FlashPlate technology from PerkinElmer Life Sciences has pro...
Dpartement dImmunologie, Laboratoires Fournier S.A., France TGF- type I and type II receptors form ligand dependent heteromeric signaling complexes, in which transforming growth factor- receptor type II (TRII) tends to act as the primary receptor....
In Vitro Measurement of the Second Messenger cAMP: RIA vs. FlashPlate
Abnormalities in neurotransmission within the brain can lead to several disease states, including anxiety, depression or schizophrenia. Extensive research has been carried out to discover the mode of action of various transmitters, in order to understand and combat these diseases. In many cells, binding of the neurotransmitter to its recept...The chemistry, spectroscopy, and reactivity of singlet oxygen, , su...
Phosphorescence lifetime measured using the SPEX phosphorimeter
A phosphorimeter integral to the SPEX system can uncover important information on various systems of chemical and biochemical interest, by revealing data normally masked by intense but rapid fluorescence. <P>This Application Not...Picking Vista sure seemed like a good idea at the time
learning curve for the last two weeks, and I'm just plain worn out. Productivity is in the basement. Frustration has reached all-time highs, and all I'm trying to do is write a column,...In pursuit of capital, be sure to track your private offering
Here's a conversation overheard at a recent conference: Entreprene...Visions: Preizler offers insurer's perspective on healthcare IT
, views the benefits in much the same way and he explains why in Part...Making sure YourSpace is technologically sound
It is also important to current tenants who are contemplating a move to another building space. With all the properties available today, some should be avoide...Medical College receives $11 million grant to study high blood pressure
The grant was provided by the to evaluate the impact that genes within specific regions of chromosome 13 have on salt...Cities unsure about voter registration software
And the clock is ticking. The Web-based, statewide voter regi...Joint Finance blocks Doyle ethanol measure
for rejecting a proposed ethanol mandate earlier this year. Now, the <a href="http://www.legis.state.wi.us/lfb/jfc.html"...Pressure mounts for Doyle to repeal shareholder liability law
The bill, AB 1163, has passed both houses of the Legislature, and it has...Broadband deployment measure goes to governor
The bills, Assembly Bill 892 and Senate Bill 483, are known as the Broadband Deployment Act. They would provide $7.5 million in income tax credits to pr...Windows exploit worsens as stop-gap measures fill in for official patch
<b...Wisconsin Senate votes to outlaw cloning; measure still faces veto
The bill was supported by all Republicans and two Democrats: Sen. Jeff Plale, D-South Milwaukee, and Sen. Roger Breske, D-Eland. The bill, AB 499, would outlaw not only cloning for...Probe into gas gouging may educate Americans about pressures on oil supply
My enthusiasm is only partially based on what the commission may learn about illegal...SWIB gets more pressure to invest in state tech start-ups
A month after SWIB brought in investment representatives to discuss the Wisconsin high-tech start-up scene, State Sen. Ted Kanavas (R-Brookfield) met with SWIB...As one reader stated, the idea of getting independence from technology is as impossible. (He also suggested it was illegal and non-ethical, but Im chalking that up to hyperbolic use of a metaphor.) Im not sugge...
Ethics Board to put financial disclosures online with new grant
Wisconsin's The grant came from the All the information is...Google Maps makes navigation a pleasure
Now Google is expanding into maps. is a recent offering that blends Google's intuitive se...Technology puts pressure on old education methods
Judy Brown, an analyst of emerging technology for the University of Wisconsin-Madison and director of the Madison chapter of the World Future Society...Other TagsFactoFactoFactoFactoFactoFactoFactoFactoOther Contentsdependencedependencedependencedependencedependencedependencedentistrydentistrydeodorantsdermabrasiondermatologydermatologydermatologydermatologydermatologydermatomyositisdesensitizationdesensitizationdetacheddetacheddetacheddetacheddetached
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(Date:5/15/2008)...found that whether bacteria stick to surfaces depe...gineers have created ultrathin films made of polym...ther surfaces to control microbe accumulation. , ...ide a valuable layer of protection for the health ...ospital-acquired infections, which take the lives ...
(Date:5/15/2008)...quantity of nitrogen compounds emitted into the at...uels and the use of nitrogen fertilizers enters th...n dioxide from the atmosphere, concluded a team of...ity Distinguished Professor of Oceanography and At... experts from institutions around the world presen...
(Date:5/15/2008)...08) Argonne National Laboratory has signed a memo...National Laboratory (SRNL) to collaborate on nucle...ojects in support of critical U.S. Energy Departme...ties. , "The MOU allows Argonne to remain a lead...obert Rosner said. "Argonne has the nation,s large...
(Date:5/15/2008)...ootball. Maneuvering through a room full of people... Most would agree these seemingly simple actions r...uation. Assistant Professor of Cognitive Science a...rgues they require something moreour ability to fo...e-tenth of a second to translate the light that hi...
Breaking Biology News(10 mins):MIT crafts bacteria-resistant films 2MIT crafts bacteria-resistant films 3Atmosphere threatened by pollutants entering ocean, prof says 2Atmosphere threatened by pollutants entering ocean, prof says 3Argonne-SRNL agreement supports critical DOE, national priorities 2Crystal (eye) ball: Study says visual system equipped with 'future seeing powers' 2Crystal (eye) ball: Study says visual system equipped with 'future seeing powers' 3Obesity Costs U S Companies as Much as 2445 Billion a Year The Conference Board Reports 16384 1Obesity Costs U S Companies as Much as 2445 Billion a Year The Conference Board Reports 16384 2Obesity Costs U S Companies as Much as 2445 Billion a Year The Conference Board Reports 16384 3Rice Memorial Hospital Implements SinglePointe 28TM 29 Automated Patient Specific Management Solution From Omnicell 4498 1Rice Memorial Hospital Implements SinglePointe 28TM 29 Automated Patient Specific Management Solution From Omnicell 4498 2Rice Memorial Hospital Implements SinglePointe 28TM 29 Automated Patient Specific Management Solution From Omnicell 4498 3Your neighborhood can affect your health 16378 1Your neighborhood can affect your health 16378 218th Annual Retirement Confidence Survey 3A 28R 29 Workers Show Record Drop in Retirement Confidence Health Care and Economy Are Major Concerns 16374 118th Annual Retirement Confidence Survey 3A 28R 29 Workers Show Record Drop in Retirement Confidence Health Care and Economy Are Major Concerns 16374 218th Annual Retirement Confidence Survey 3A 28R 29 Workers Show Record Drop in Retirement Confidence Health Care and Economy Are Major Concerns 16374 318th Annual Retirement Confidence Survey 3A 28R 29 Workers Show Record Drop in Retirement Confidence Health Care and Economy Are Major Concerns 16374 4(Date:5/17/2008)... Biggs Named Spokesperson for Education Campaign o...lpha-1 Proteinase Inhibitor (Human) Augmentation ...USSIA, Pa., May 17 /PRNewswire/ -- Melissa Biggs, ...watch was recently named,spokesperson for an educa...ing Americans to get tested for alpha-1 antitrypsi...
(Date:5/16/2008)... BENSALEM, Pa., May 16 /PRNewswire/ -- Law Offi...eadline to move to be a lead plaintiff in the,secu... persons who,purchased or otherwise acquired the c... ("Inverness Medical" or the "Company") (Amex: IM...or about November 14, 2007 (the,"Class Period"). T...
(Date:5/16/2008)...Consumers could report side effects, but critics w...IDAY, May 16 (HealthDay News) -- Direct-to-consume...e phone number that would allow consumers to repor...ted Friday. , The experts serve on a panel that...ch phone numbers are already mandated by the FDA f...
(Date:5/16/2008)... Contract Covers More than 500 Workers, WASHIN...500 paramedics,and emergency medical technicians i...ington area have ratified their first-ever contrac...these workers are now covered by a,strong contract...ement,future," said Teamsters General President Ji...
Breaking Medicine News(10 mins):Health News:Melissa Biggs, Fashion Designer and Former Baywatch Actress, Teams with CSL Behring to Raise Awareness of Alpha-1 Antitrypsin Deficiency, a Commonly Misdiagnosed Respiratory Disease 2Health News:Melissa Biggs, Fashion Designer and Former Baywatch Actress, Teams with CSL Behring to Raise Awareness of Alpha-1 Antitrypsin Deficiency, a Commonly Misdiagnosed Respiratory Disease 3Health News:Melissa Biggs, Fashion Designer and Former Baywatch Actress, Teams with CSL Behring to Raise Awareness of Alpha-1 Antitrypsin Deficiency, a Commonly Misdiagnosed Respiratory Disease 4Health News:Melissa Biggs, Fashion Designer and Former Baywatch Actress, Teams with CSL Behring to Raise Awareness of Alpha-1 Antitrypsin Deficiency, a Commonly Misdiagnosed Respiratory Disease 5Health News:Law Offices of Howard G. Smith Announces 24 Days Remaining to Move to Be a Lead Plaintiff in the Shareholder Lawsuit Against Inverness Medical Innovations, Inc. 2Health News:FDA Panel Considers Toll-Free Number for TV Drug Ads 2Health News:FDA Panel Considers Toll-Free Number for TV Drug Ads 3[0] Melissa Biggs, Fashion Designer and Former Baywatch Actress, Teams with CSL Behring to Raise Awareness of Alpha-1 Antitrypsin Deficiency, a Commonly Misdiagnosed Respiratory Disease[0] Law Offices of Howard G. Smith Announces 24 Days Remaining to Move to Be a Lead Plaintiff in the Shareholder Lawsuit Against Inverness Medical Innovations, Inc.[0] FDA Panel Considers Toll-Free Number for TV Drug Ads[0] Paramedics, EMTs in Oregon, Washington State Ratify First-Ever Teamsters Contract
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