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tag bumble bees cell molecular biology

Bees’ Molecular Responses to Neonicotinoids Determined
Catherine Offord | Mar 22, 2018 | 4 min read
Researchers pinpoint a protein that can metabolize at least one of the insecticides, highlighting a route to identifying compounds that are friendlier to the critical pollinators.
bacteria inside a biofilm
How Bacterial Communities Divvy up Duties
Holly Barker, PhD | Jun 1, 2023 | 10+ min read
Biofilms are home to millions of microbes, but disrupting their interactions could produce more effective antibiotics.
Cancer's Other Conduit
The Scientist Staff | Sep 7, 2003 | 7 min read
Courtesy of Elsevier  DEADLY SPREAD: A: an insulinoma (Ins) in a Rip1Tag2 transgenic mouse. LYVE-1 immunohistochemistry demonstrates the presence of lymphatic vessels in connective tissue, but not near islets of Langerhans. B: Rip1Tag2 mice were crossed with mice which overexpress VEGF-C in pancreatic b-cells. C: An insulinoma cell breaks through a lymphatic vessel. D: An intralymphatic tumor cell mass forms. E: In a lymph node, lymphocytes (L) are surrounded by tumor cells (T). F: Immunof
translation gene genetics ribosome enhancers knowable magazine
What Does It Look Like to “Turn On” a Gene?
Alla Katsnelson, Casey Rentz, and Knowable Magazine | May 3, 2019 | 8 min read
Only recently have scientists directly witnessed this most pivotal of events in biology, thanks to new technology that allows them to observe the process in living cells. It’s teaching them a lot.
The Genetics of Society
Claire Asher and Seirian Sumner | Jan 1, 2015 | 10 min read
Researchers aim to unravel the molecular mechanisms by which a single genotype gives rise to diverse castes in eusocial organisms.
New Dimensions in Confocal Microscopy
Mike May | Jul 27, 2003 | 4 min read
New Dimensions in Confocal Microscopy PerkinElmer's new UltraVIEW RS microscope produces real-time images in six dimensions Courtesy of PerkinElmer A protein's function depends on its movement inside a cell and interactions with other proteins and biological structures. Biologists who want to watch proteins working in living cells frequently turn to confocal microscopy. "Confocal microscopy is critical for modern cell biology and physiology," says Michael Nathanson of the Yale University Sc
PCR Primed To Spur Chain Of Applications
Holly Ahern | Jun 25, 1995 | 10+ min read
What would you do if your research interests revolved around obtaining DNA from a bacterium preserved for millions of years in the gut of a bee stuck in amber, matching up a murderer to crime- scene blood half a century old, or cloning genes from a 1,000- year-old mummy? Most scientists would first consider PCR--the polymerase chain reaction--as a technique for approaching problems such as these. With PCR, minute quantities of nucleic acids can be amplified millions of times into sufficient qua
Yeast Pushes the Proteomic Envelope
Mignon Fogarty | Jul 27, 2003 | 7 min read
 NETWORKED: (A) Effects of the gal4D+gal perturbation are superimposed on a gene interaction network… Click for larger version (92K) Large-scale biology once conjured images of brute-force genetic screens resulting in collections of mutants. More recently, it has meant genome sequencing on unprecedented scales. But today, as this issue's Hot Papers demonstrate, the leading edge in large-scale biology is proteomics. As in the large-scale efforts of the past, researchers rely on simp
Fluorophore Fingerprinting; Gene Therapy Hybrid; Low-Level Annotation
Ivan Oransky | Jul 27, 2003 | 4 min read
PATENT WATCH | Fluorophore Fingerprinting The Molecular Sciences Institute in Berkeley, Calif., has been awarded a patent for a protein fingerprint system (US patent 6,569,685, issued May 27, 2003). The patent covers a method that, in the simplest case, consists of covalently modifying reactive residues using orthogonal chemistries, by attaching one fluorophore to lysine residues under appropriate chemical conditions, and a different fluorophore to cysteine residues. "The general idea is to
Coupling In Vitro Transcription and Translation
Amy Adams | Oct 19, 2003 | 9 min read
Click for larger version of in vitro transcription/translation diagrams (57K) Cells are, at a fundamental level, protein-production facilities. So naturally, when researchers need to make some particular protein, they should let the cells do the work for them. But living cells are not terribly good at making exogenous proteins; some proteins are toxic, while others are degraded or simply clumped into insoluble aggregates called inclusion bodies. These days, scientists sometimes take a minima

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