Airborne transmission of viruses, like the virus causing COVID-19, is not well understood, but a good baseline for study is a deeper understanding of how particles travel through the air when people cough.
May 19, 2020
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Until now it has been believed that in order for a tick to trigger an allergic immune response to alpha-gal in humans, the tick would need to have recently fed on the alpha-gal-rich blood of a mammal. New research from the ...
Feb 23, 2019
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COVID-19 reactivated viruses that had become latent in cells following previous infections, particularly in people with chronic fatigue syndrome, also known as ME/CFS. This is the conclusion of a study from Linköping University ...
Nov 16, 2022
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Newborn breastfed babies' saliva combines with breastmilk to release antibacterial compounds that help to shape the bacterial communities (microbiota) in babies' mouths, biomedical scientists have found.
Nov 8, 2018
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The first study of its kind has found that people who vape have the same mix of gut bacteria as non-smokers, whilst smokers have significant changes to their microbiome.
Apr 30, 2018
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(HealthDay)—A new Swedish study suggests that parents who want to protect their infants from developing allergies should try a simple approach to introducing their children to the wide world of microbes: Just pop their ...
May 6, 2013
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Researchers at the University of Arizona are developing a COVID-19 testing method that uses a smartphone microscope to analyze saliva samples and deliver results in about 10 minutes.
Jan 29, 2021
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Did you ever think that a simple task like brushing your teeth could actually keep your lungs healthy—in addition to preventing cavities and gum disease? From chewing sticks to using twigs, hog bristles and horsehair, people ...
Mar 18, 2022
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The idea behind power poses, that if you stand in a "powerful" position, broad posture, hands on hips, shoulders high and pushed back, you will suddenly feel psychologically and physiologically stronger, is intuitively appealing, ...
Nov 24, 2016
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An international team of scientists has found evidence that SARS-CoV-2, the virus that causes COVID-19, infects cells in the mouth. While it's well known that the upper airways and lungs are primary sites of SARS-CoV-2 infection, ...
Mar 25, 2021
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Saliva (also referred to as spit , spittle or slobber) is the watery and usually frothy substance produced in the mouths of humans and most other animals. Saliva is produced in and secreted from the salivary glands. Human saliva is composed mostly of water, but also includes electrolytes, mucus, antibacterial compounds, and various enzymes. As part of the initial process of food digestion, the enzymes in the saliva break down some of the starch and fat in the food at the molecular level. Saliva also breaks down food caught in the teeth, protecting them from bacteria that cause decay. Furthermore, saliva lubricates and protects the teeth, the tongue, and the tender tissues inside the mouth. Saliva also plays an important role in tasting food by trapping thiols produced from odourless food compounds by anaerobic bacteria living in the mouth.
Various species have evolved special uses for saliva that go beyond predigestion. Some swifts use their gummy saliva to build their nests. Some Aerodramus swiftlet nests are made only from saliva and used to make bird's nest soup. Cobras, vipers, and certain other members of the venom clade hunt with venomous saliva injected by fangs. Some arthropods, such as spiders and caterpillars, create thread from salivary glands.
This text uses material from Wikipedia, licensed under CC BY-SA
