Beta error: The statistical error (said to be 'of the second kind,' or type II) that is made in testing when it is concluded that something is negative when it really is positive. Also known as false negative.
Beta adrenergic blocking agents: A class of drugs, also called beta blockers, that block beta-adrenergic substances such as adrenaline (epinephrine), a key agent in...
Beta blocker: A class of drugs that block the effect of beta-adrenergic substances such as adrenaline (epinephrine), that play a key role in the sympathetic portion of...
Beta carotene: A vitamin that acts as an antioxidant, protecting cells against oxidation damage. Beta carotene is converted by the body to vitamin A. Food sources of...
Beta cell: A type of cell in the pancreas. Within the pancreas, the beta cells are located in areas called the islets of Langerhans where they constitute the predominant type...
Beta cell, pancreatic: A type of cell in the pancreas (the organ of the digestive system located behind the stomach). Within the pancreas, the beta cells are...
Beta particle: An electron ejected from the nucleus of a decaying atom. Although beta particles can be stopped by a thin sheet of aluminum, they can penetrate the dead skin...
Error, beta: The statistical error (said to be 'of the second kind,' or type II) that is made in testing when it is concluded that something is negative when it...
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