A team of researchers has generated a developmental map of a key sound-sensing structure in the mouse inner ear. Scientists at the National Institute on Deafness and Other Communication Disorders (NIDCD), part of the National ...
May 29, 2020
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The results of a clinical trial released today in STEM CELLS Translational Medicine demonstrate how a topical solution made up of stem cells leads to the regrowth of hair for people with a common type of baldness.
May 19, 2020
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An innovative radiation treatment that could one day be a valuable addition to conventional radiation therapy for inoperable brain and spinal tumors is a step closer, thanks to new research led by University of Saskatchewan ...
May 13, 2020
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Individuals who used drugs occasionally reported less use six months after a motivational interview with a health professional, while individuals who did not receive the intervention reported more use.
May 11, 2020
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If you're a smoker, there's really never been a better time to quit. Coronavirus affects your lungs, causing flu-like symptoms such as fever, cough, shortness of breath, sore throat and fatigue. In the most serious cases, ...
Apr 14, 2020
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A new method to accurately record brain activity at scale has been developed by researchers at the Crick, Stanford University and UCL. The technique could lead to new medical devices to help amputees, people with paralysis ...
Mar 20, 2020
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We are born with all the hair follicles that we will ever have in our lives, because after birth the skin loses the ability to create new hair follicles. If our skin is severely damaged it cannot form new hair follicles or ...
Mar 18, 2020
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Similar to humans, wild animals' reaction to disturbance is accompanied by releasing hormones, including cortisol. To understand the impact of various stress factors on wildlife—for example, competition for food, encounters ...
Mar 12, 2020
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An estimated 28,000 to 36,000 deaths a year in the UK are attributed to long-term exposure to air pollution. Exposure to air pollution can cause a range of serious health complications, including lung cancer, heart disease ...
Feb 26, 2020
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The short answer is yes, stress and hair loss can be related.
Feb 10, 2020
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Hair is a protein filament that grows through the epidermis from follicles deep within the dermis. The fine, soft hair found on many nonhuman mammals is typically called fur; wool is the characteristically curly hair found on sheep and goats. Found exclusively in mammals, hair is one of the defining characteristics of the mammalian class. Although other non-mammals, especially insects, show filamentous outgrowths, these are not considered "hair" in the scientific sense. So-called "hairs" (trichomes) are also found on plants. The projections on arthropods such as insects and spiders are actually insect bristles, composed of a polysaccharide called chitin. There are varieties of cats, dogs, and mice bred to have little or no visible fur. In some species, hair is absent at certain stages of life. The main component of hair fiber is keratin.
The hair can be divided into three parts length-wise, (1) the bulb, a swelling at the base which originates from the dermis, (2) the root, which is the hair lying beneath the skin surface, and (3) the shaft, which is the hair above the skin surface. In cross-section, there are also three parts, (1) the medulla, an area in the core which contains loose cells and airspaces (2) the cortex, which contains densely packed keratin and (3) the cuticle, which is a single layer of cells arranged like roof shingles.
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