In humans, melanin is the primary determinant of skin color. It is also found in hair, the pigmented tissue underlying the iris of the eye, and the stria vascularis of the inner ear. In the brain, tissues with melanin include the medulla and zona reticularis of the adrenal gland, and pigment-bearing neurons within areas of the brainstem, such as the locus coeruleus and the substantia nigr
Thanks to this work, as the journal Trends in Plant Science recently noted, it is now known that functional amyloids serve biological functions in representatives of almost all large groups of living organisms: bacteria, archaea, animals, fungi, and plants.
Risk for melanoma, the most deadly skin cancer, can be estimated long before detection of any suspicious moles, according to a UC San Francisco scientist who led a new study to detect DNA mutations in individual skin cells.
A global collaboration of scientists has more than doubled the known number of regions on the human genome that influence the risk of developing melanoma.
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