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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Colon with diverticulosis. An inflamed or infected diverticulum is called diverticulitis.
The Rise and Fall of Separation Anxiety
Different forms of a gene are called alleles