royal jelly

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royal jelly

n.
A nutritious substance secreted by worker bees that serves as food for all young larvae and as the only food for larvae that will develop into queen bees. Royal jelly is sometimes used as a dietary supplement and in cosmetics.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

royal jelly

A salivary secretion of worker bees, which they feed to the bee chosen to be the queen of the hive, causing the designate to grow larger, live longer and reproduce. In humans, royal jelly is said to be useful for asthma, chronic fatigue, diseases of childhood, Epstein-Barr infection, insomnia, mental disorders and other conditions; it is also said to stimulate the immune system, retard ageing and increase mental and physical agility.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

royal jelly

A foodstuff secreted by worker bees for the nutrition of larvae and queen bees and sold at high prices. There is no reason to suppose that royal jelly has any medicinal value.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

royal jelly

or

queen substance

a substance produced by the pharyngeal glands in the early adult life of the worker bee that is used for feeding the young brood (for up to four days) and the larvae of queen bees for longer periods to ensure their development into queens. It contains 40% dry matter in the form of lipoproteins, neutral glycerides, free-fatty acids, sugar, amino acids and all the B vitamins. It also has a high content of ACETYLCHOLINE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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