Researchers at the National Institutes of Health have applied artificial intelligence (AI) to a technique that produces high-resolution images of cells in the eye. They report that with AI, imaging is 100 times faster and ...
Apr 10, 2024
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Researchers at the Francis Crick Institute have discovered that a common dietary supplement could protect against chronic Cryptosporidium infections which are particularly prevalent in children under two and in areas with ...
Dec 4, 2023
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Researchers in China have successfully restored the vision of mice with retinitis pigmentosa, one of the major causes of blindness in humans. The study, to be published March 17 in the Journal of Experimental Medicine, uses ...
Mar 17, 2023
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Scientists used patient stem cells and 3D bioprinting to produce eye tissue that will advance understanding of the mechanisms of blinding diseases. The research team from the National Eye Institute (NEI), part of the National ...
Dec 22, 2022
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The reason some people fail to recover their sense of smell after COVID-19 is linked to an ongoing immune assault on olfactory nerve cells and an associated decline in the number of those cells, a team of scientists led by ...
Dec 21, 2022
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A common symptom of COVID-19 is a partial or complete loss of smell. The virus infects sustentacular cells in the olfactory epithelium and is thought to impair thereby the activity of the sensory neurons in this epithelium.
Dec 8, 2022
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By combining traditional eye imaging techniques with adaptive optics—a technology that enhances imaging resolution—researchers at the National Eye Institute (NEI) have shown for the first time how cells across different ...
Sep 14, 2022
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A special layer of cells that coats the insides of the small and large intestines takes in nutrients and water while keeping anything bad from circulating. This layer is called the intestinal epithelium. It completely renews ...
Jul 13, 2022
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As we age, so do our eyes; most commonly, this involves changes to our vision and new glasses, but there are more severe forms of age-related eye problems. One of these is age-related macular degeneration, which affects the ...
Jun 14, 2022
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Researchers from the National Eye Institute (NEI) have identified a new disease that affects the macula, a small part of the light-sensing retina needed for sharp, central vision. Scientists report their findings on the novel ...
Jun 9, 2022
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Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport and detection of sensation. In Greek "Epi" means, "on, upon," and "Theli" meaning "tissue." Epithelial layers are avascular, so they must receive nourishment via diffusion of substances from the underlying connective tissue, through the basement membrane.[unreliable source?] Epithelia can also be organized into clusters of cells that function as exocrine and endocrine glands. Exocrine and endocrine epithelial cells are highly vascular.
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