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Bioscience

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Displaying 426 - 450 of 2355

Characterization of the internal translation initiation region in monoclonal antibodies expressed in Escherichia coli

October 11, 2019
Author(s)
Erik M. Leith, William Brad O'Dell, Na Ke, Colleen McClung, Mehmet Berkmen, Christina Bergonzo, Robert G. Brinson, Zvi Kelman
Monoclonal antibodies (mAbs) represent an important platform for the development of biotherapeutic products. While most mAbs are produced in mammalian cells, there are several examples of mAbs made in Escherichia coli, including therapeutic fragments. When

NIST Fatty Acid Quality Assurance Program 2017 Final Report

October 1, 2019
Author(s)
Bruce A. Benner Jr., Jacolin A. Murray
At the request of the National Institutes of Health’s (NIH’s) Office of Dietary Supplements (ODS) and in conjunction with the Centers for Disease Control and Prevention (CDC), in 2017 the National Institute of Standards and Technology (NIST) conducted the

Pumpless Microfluidic Devices for Generating Healthy and Diseased Endothelia

September 27, 2019
Author(s)
Yang Yang, Parinaz Fathi, Glenn Holland, Dipanjan Pan, Nam Wang, Mandy Esch
We have developed a pumpless cell culture platform that can recirculate small amounts of cell culture medium (400 µL) in a unidirectional or bidirectional flow pattern. The device produces an average wall shear stress of up to 0.587 Pa ± 0.006 Pa without

Measurement of Oxidatively Induced DNA Damage in Caenorhabditis elegans with High-Salt DNA Extraction and Isotope-Dilution Mass Spectrometry

August 27, 2019
Author(s)
Leona D. Scanlan, Pawel Jaruga, Sanem Hosbas Coskun, Christopher Sims, Shannon Hanna, Jamie L. Almeida, David N. Catoe, Bryant C. Nelson, Miral M. Dizdar, Erdem Coskun
Caenorhabditis elegans (C. elegans) is used as a medical and systems toxicity model organism for environmental and developmental assays that include high-throughput methods and genetic studies. However, little is known about background levels of

Mass Spectrometry Fingerprints of Small-Molecule Metabolites in Biofluids: Building a Spectral Library of Recurrent Spectra for Urine Analysis

August 18, 2019
Author(s)
Yamil Simon, Ramesh Marupaka, Xinjian Yan, Yuxue Liang, Kelly H. Telu, Yuri Mirokhin, Stephen E. Stein
A large fraction of ions observed in electrospray liquid chromatography–mass spectrometry (LC–ESI-MS) experiments of biological samples remain unidentified. One of the main reasons for this is that spectral libraries of pure compounds fail to account for

Analysis of Different Computational Techniques for Calculating the Polarizability Tensors of Stem Cells with Realistic Three-Dimensional Morphologies

July 15, 2019
Author(s)
Jack F. Douglas, Beatriz Betancourt, Somen Baidya, Ahmed M. Hassan, Waleed Al-Shaikhli, Edward J. Garboczi
In living systems, it is frequently stated that form follows function by virtue of evolutionary pressures on organism development, but in the study of how functions emerge at the cellular level, function often follows form. We study this chicken versus egg

Mass spectrometry enumeration of filamentous M13 bacteriophage

July 2, 2019
Author(s)
Tingting Wang, Ai Nguyen, Linwen Zhang, Illarion Turko
In the last decade, filamentous M13 bacteriophage has emerged into numerous biotechnological applications as a promising nontoxic and self-assembling biomaterial with specific binding properties. This raises a question about its upscale production that

genomeview - an extensible python-based genomics visualization engine

June 26, 2019
Author(s)
Noah Spies, Justin Zook, Marc L. Salit, Arend Sidow
Visual inspection and analysis is integral to quality control, hypothesis generation, methods development and validation of genomic data. The richness and complexity of genomic data necessitates customized visualizations highlighting specific features of

Interlaboratory study to validate a STR profiling method for intraspecies identification of mouse cell lines

June 20, 2019
Author(s)
Jamie L. Almeida, Aleksandra Dakic, Karin Kindig, Maikan Kone, Deborah L. Letham, Scott Langdon, Ruth Peat, Jayamalini Holding-Pillai, Erin Hall, Mark Ladd, Megan Shaffer, Heath Berg, Jinliang Li, Georges Wigger, Steven P. Lund, Carolyn R. Steffen, Barbara Fransway, Bob Geraghty, Manuela Natoli, Beth Bauer, Susanne M. Gollin, Dale Lewis, Yvonne A. Reid
The Consortium for Mouse Cell Line Authentication was formed to validate Short Tandem Repeat (STR) markers for intraspecies identification of mouse cell lines. The STR profiling method is a multiplex polymerase chain reaction (PCR) assay comprised of
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