Even intense exercise by astronauts cannot compensate for muscle atrophy caused by microgravity. Atrophy occurs, in part, by way of an underlying mechanism that regulates calcium uptake. Recent research has shown exposure ...
Space Exploration
8 hours ago
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8
Life sciences have never been more digital. To learn more about life processes, biologists are collecting massive quantities of data that computer scientists analyze by means of sophisticated computational models that they ...
Cell & Microbiology
Apr 11, 2024
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70
Dolphins and whales use sound to communicate, navigate and hunt. New research suggests that the collections of fatty tissue that enable toothed whales to do so may have evolved from their skull muscles and bone marrow.
Plants & Animals
Apr 8, 2024
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89
Some stem cells have a natural ability to divide into more cells and develop into various specialized blood, bone or muscle cells. These pluripotent stem cells offer great promise for new cell treatments and regenerative ...
Cell & Microbiology
Apr 4, 2024
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6
The Uchida Laboratory of Innovation Center of NanoMedicine has demonstrated that intradermal administration of mRNA alone (naked mRNA) without protection by nanoparticles induced robust vaccination against SARS CoV-2, a virus ...
Bio & Medicine
Apr 3, 2024
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18
Simulated effects of microgravity, created by 60 days of constant bed rest, severely disrupts rhythmic gene expression in humans, according to a new study from the University of Surrey published in iScience.
Space Exploration
Mar 19, 2024
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29
In a study published in Science China Life Sciences, Prof. Yin Yulong from the Institute of Subtropical Agriculture of the Chinese Academy of Sciences uncovered compelling evidence linking LPS-induced muscle mass loss with ...
Cell & Microbiology
Mar 13, 2024
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2
In the realm of medical imaging, there are quite a few different techniques to extract information from biological tissue based on its different interactions with visible light. Over the past decade, there has been a massive ...
Optics & Photonics
Mar 13, 2024
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14
A new Imperial College London study has answered a long-held question about why medium-sized land animals like cheetahs tend to be fastest.
Plants & Animals
Mar 12, 2024
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120
If you look at a nerve cell, a muscle cell, or a skin cell under the microscope, they appear strikingly different. However, every cell in our body has the same DNA and has descended from a common ancestor—the fertilized ...
Cell & Microbiology
Mar 11, 2024
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21
Muscle (from Latin musculus, diminutive of mus "mouse") is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to produce force and cause motion. Muscles can cause either locomotion of the organism itself or movement of internal organs. Cardiac and smooth muscle contraction occurs without conscious thought and is necessary for survival. Examples are the contraction of the heart and peristalsis which pushes food through the digestive system. Voluntary contraction of the skeletal muscles is used to move the body and can be finely controlled. Examples are movements of the eye, or gross movements like the quadriceps muscle of the thigh. There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.
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