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Healthy Aging
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Human Biology
Crab louse
Crab lice (singular, louse), scientific name Phthirus pubis and commonly called "crabs" due to their resemblance to the crab, are one of three kinds of human lice in the large group of lice families, ... > more -
Human genome
The human genome is the genome of Homo sapiens. It is made up of 23 chromosome pairs with a total of about 3 billion DNA base pairs. There are 24 distinct human chromosomes: 22 autosomal chromosomes, ... > more -
Carbohydrate
Carbohydrates are chemical compounds that contain oxygen, hydrogen, and carbon atoms. They consist of monosaccharide sugars of varying chain lengths and that have the general chemical formula ... > more -
Exocrine gland
Exocrine glands are glands that secrete their products into ducts. They are the counterparts to endocrine glands, which secrete their products directly into the bloodstream. Typical exocrine glands ... > more -
Human skeleton
The human skeleton is made of individual or joined bones, supported and supplemented by a structure of ligaments, tendons, muscles, cartilage and other organs. The skeleton is not unchanging; it ... > more
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