The right zinc levels are key to human health, researchers find
Zinc is one of those micronutrients that many people know they need but are otherwise a little vague on the particulars.
Jul 26, 2023
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Zinc is one of those micronutrients that many people know they need but are otherwise a little vague on the particulars.
Jul 26, 2023
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693
Northwestern University neuroscientists now can read the mind of a fly. They have developed a clever new tool that lights up active conversations between neurons during a behavior or sensory experience, such as smelling a ...
Dec 4, 2015
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Some of the most important tools in the toolbox of modern cell biologists are special chunks of DNA that act like spies, reporting on the cell's function. The markers, known as reporter genes, allow researchers to get a sense ...
Sep 27, 2019
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A study led by SMU suggests that oleandrin—a drug derived from the Nerium oleander plant—could prevent the HTLV-1 virus from spreading by targeting a stage of the reproduction process that is not currently targeted by ...
Dec 6, 2019
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Prozac, the trade name for the drug fluoxetine, was introduced to the U.S. market for the treatment of depression in 1988. Thirty years later, scientists still don't know exactly how the medication exerts its mood-lifting ...
Jul 10, 2019
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(Medical Xpress)—People are living longer than ever before, thanks to medical and technological advances. Unfortunately, aging can be associated with a decrease in brain function. This is because, unlike other cells in ...
It's a question that seems to offer tantalizing hope to those suffering from vision impairment. Why is it that when the optic nerve is damaged—either through trauma or disease—few of its neurons survive and fewer still ...
May 5, 2015
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Thanks to the development of antiretroviral drugs, human immunodeficiency virus (HIV) is considered a manageable chronic disease today. However, if left undiagnosed or untreated, HIV can develop into AIDS (acquired immune ...
Dec 26, 2018
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Inspired by earlier successes using gene therapy to correct an inherited type of blindness, investigators from the Perelman School of Medicine at the University of Pennsylvania, are poised to extend their approach to other ...
Jun 22, 2011
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The outer layer of the brain, known as the cortex, is made of different types of neurons. Neuroscience studies suggest that these different neuron types have distinct functions, yet for a long time this was difficult to ascertain, ...
The green fluorescent protein (GFP) is protein composed of 238 amino acids (26.9kDa), which exhibits bright green fluorescence when exposed to blue light. Although many other marine organisms have similar green fluorescent proteins, GFP traditionally refers to the protein first isolated from the jellyfish Aequorea victoria. The GFP from A. victoria has a major excitation peak at a wavelength of 395 nm and a minor one at 475 nm. Its emission peak is at 509 nm which is in the lower green portion of the visible spectrum. The GFP from the sea pansy (Renilla reniformis) has a single major excitation peak at 498 nm. In cell and molecular biology, the GFP gene is frequently used as a reporter of expression. In modified forms it has been used to make biosensors, and many animals have been created that express GFP as a proof-of-concept that a gene can be expressed throughout a given organism. The GFP gene can be introduced into organisms and maintained in their genome through breeding, injection with a viral vector, or cell transformation. To date, the GFP gene has been introduced and expressed in many bacteria, yeast and other fungi, fish (such as zebrafish), plant, fly, and mammalian cells, including human. Martin Chalfie, Osamu Shimomura, and Roger Y. Tsien were awarded the 2008 Nobel Prize in Chemistry on 8 October 2008 for their discovery and development of the green fluorescent protein.
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