Osteoporosis is a common disorder, especially in the elderly, characterized by bone loss and increased fracture risk. Treatments target abnormal osteoclast activity but face adherence issues. The disease disrupts the balance ...
Jul 5, 2024
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Potassium channels are openings that allow charged potassium atoms to cross the cell membrane. Voltage-gated potassium channels—which open only when a specific voltage is reached across the cell membrane—are essential ...
Jun 27, 2024
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What happens when the measles virus meets a human cell? The viral machinery unfolds in just the right way to reveal key pieces that let it fuse itself into the host cell membrane.
Jun 27, 2024
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Fatty liver disease (SLD) is increasingly causing failure of the liver as a vital organ. A team led by researchers from the Institute of Metabolic Physiology at Heinrich Heine University Düsseldorf (HHU) in collaboration ...
Jun 14, 2024
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By super cooling a molecule on the surface of brain cells down to about minus 180 degrees Celsius—nearly twice as cold as the coldest places in Antarctica—scientists at Johns Hopkins Medicine say they have determined ...
Jun 10, 2024
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Calcific aortic valve disease (CAVD) is the major heart valve disease that afflicts nearly 10 million patients globally with an annual mortality exceeding 100,000, and the numbers continue to rise.
Jun 5, 2024
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Jyothi Nagajyothi, Ph.D. and her laboratory at the Hackensack Meridian Center for Discovery and Innovation (CDI) have identified what may be the main mechanism for how chronic Chagas disease, a parasitic infection affecting ...
May 20, 2024
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Researchers at the Icahn School of Medicine at Mount Sinai have shed valuable light on the complex mechanisms by which a class of psychedelic drugs binds to and activates serotonin receptors to produce potential therapeutic ...
May 8, 2024
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LMU researchers have deciphered the complex interplay of various enzymes around the innate immune receptor toll-like receptor 7 (TLR7), which plays an important role in defending our bodies against viruses.
May 2, 2024
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Usually, the word "cholesterol" prompts a negative reaction because of its role in cardiovascular disease. While this is true, cholesterol is also vital for cells to function correctly—for example, cholesterol is a component ...
Apr 9, 2024
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An electron microscope is a type of microscope that uses a particle beam of electrons to illuminate a specimen and create a highly-magnified image. Electron microscopes have much greater resolving power than light microscopes that use electromagnetic radiation and can obtain much higher magnifications of up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by the wavelength of the radiation they use. The greater resolution and magnification of the electron microscope is because the wavelength of an electron; its de Broglie wavelength is much smaller than that of a photon of visible light.
The electron microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane relative to the specimen. This manner is similar to how a light microscope uses glass lenses to focus light on or through a specimen to form an image.
This text uses material from Wikipedia, licensed under CC BY-SA
