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tag gas chromatography mass spectrometry cell molecular biology culture evolution ecology

Mass Spectrometry Applications for Proteomics
Jeffrey Perkel | Aug 19, 2001 | 10+ min read
Click to view the PDF file: Proteomic Mass Spectrometry Equipment Courtesy of CiphergenCiphergen's SELDI process, a MALDI variant that includes a surface-based enrichment step Early in the twentieth century, scientists puzzled over the observation that certain elements that were otherwise physically indistinguishable from each other nevertheless exhibited different radioactive decay characteristics. These elements would ultimately come to be known as isotopes, but at the time this concept was
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
Cheese Helped Fuel Early Farmers in Europe
Shawna Williams | Dec 1, 2018 | 4 min read
Scientists have found traces of the dairy product in 7,200-year-old pottery in Croatia.
2020 Top 10 Innovations
The Scientist | Dec 1, 2020 | 10+ min read
From a rapid molecular test for COVID-19 to tools that can characterize the antibodies produced in the plasma of patients recovering from the disease, this year’s winners reflect the research community’s shared focus in a challenging year.
Biochemical, Reagents Kits Offer Scientists Good Return On Investment
Holly Ahern | Jul 23, 1995 | 8 min read
Investment Author:Holly Ahern If you were to ask several life scientists to name a particular biochemical product that they simply could not do without, you'd probably get a myriad of answers that would mirror the research interests of the group you questioned. A molecular evolutionist trying to differentiate two closely related species of monkeys by restriction fragment-length polymorphism (RFLP) analysis might cite restriction enzymes, which can cut DNA into pieces of varying length. A cell b
Illuminating Behaviors
Douglas Steinberg | Jun 1, 2003 | 6 min read
Courtesy of Genevieve Anderson If not for Nobel laureates Thomas Hunt Morgan, Eric R. Kandel, and Sydney Brenner, the notion of a general behavioral model might seem odd. Behaviors, after all, are determined by an animal's evolutionary history and ecological niche. They are often idiosyncratic, shared in detail only by closely related species. But, thanks to Morgan's research in the early 20th century, and Kandel's and Brenner's work over the past 35 years, the fly Drosophila melanogaster, t
Red Tides Under the Microscope
Bob Grant | Nov 1, 2019 | 10+ min read
Understanding the dinoflagellates that regularly wreak havoc on marine and nearshore ecosystems in the Gulf of Mexico could help researchers mitigate the damage they cause.
Top 10 Innovations 2016
The Scientist | Dec 1, 2016 | 10+ min read
This year’s list of winners celebrates both large leaps and small (but important) steps in life science technology.
Phospho-Mania
Aileen Constans | Nov 7, 2004 | 6 min read
ERK1/2 ACTIVATIONCourtesy of Biosource Internationalis plainly visible in heart tissue from an MHC-Rac1 transgenic mouse (right), compared with its normal counterpart (left). Green, pERK 1/2 (pTEpY185/187); blue, actin; red, nuclei.Protein phosphorylation is one of the most widely studied posttranslational modifications, with good reason. Many cellular signaling events rely on the addition or subtraction of phosphate groups (by kinases and phosphatases, respectively) to serine, threonine, and ty
Top 10 Innovations 2015
The Scientist | Dec 1, 2015 | 10+ min read
The newest life-science products making waves in labs and clinics

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