vitellus


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Related to vitellus: yolky

yolk

 [yōk]
the stored nutrient of the ovum.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

yolk

(yōk, yōlk),
1. One of the types of nutritive material stored in the oocyte (ovum) for the nutrition of the embryo; yolk is particularly abundant and conspicuous in the eggs of birds. Synonym(s): vitellus
2. Fatty material found in the wool of sheep; when extracted and purified, it becomes lanolin.
[A.S. geolca; geolu, yellow]
Farlex Partner Medical Dictionary © Farlex 2012

vitellus

(vĭ-tĕl′əs, vī-)
n. pl. vitel·luses
The yolk of an egg.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

yolk

(yōk)
1. One of the types of nutritive material stored in the oocyte for the nutrition of the embryo; particularly abundant and conspicuous in the eggs of birds.
Synonym(s): vitellus.
2. Fatty material found in the wool of sheep; when extracted and purified, it becomes lanolin.
[A.S. geolca;geolu, yellow]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Rappelons que, pendant la vitellogenese, le corps gras synthetise un precurseur de la vitelline (principale proteine du vitellus des oeufs des insectes), la vitellogenine: celle-ci est secretee dans l'hemolymphe et absorbe par les ovocytes en cours du developpement.
A prominent yolk sac (vitellus) protrudes from the ventral surface of the embryo and is important in providing nutrients.
Maternally derived antibodies were efficiently transmitted in vitellus, further confirming that offspring of females hyperimmunized with the inactivated vaccine received high titers of maternal antibodies.
ex., du vitellus) a un stade precocoe, parmi d'autres facteurs, et constituent une reaction a des changements environnementaux.
Some lipid classes, namely phospholipids, have an important role in the composition of the gametes (Pollero and Iribarne, 1988), because they are probably involved in the synthesis of the vitellus, which is a yolk phospholipoprotein (Fujii, 1960).
Archaeologist Joseph Severn who found the 43 gold Roman coins at a dig in the City of London last summer Twelve of the coins found in all their 22-carat-gold glory which belonged to the eras of the following Roman rulers (from left to right): Antoninus Pius (AD138-41), Faustina (AD138-41), Hadrian (AD117-38), Lucilla (AD164-9), Lucius Aelius (AD138), Lucius Verus (AD165-6), Marcus Aurelius (AD161-80), Nero (AD54-68), Titus (AD79-81), Trajan (AD98-117), Vespasian (AD69-79) and Vitellus (AD69)