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 (vĭ-tĕl′ĭn, vī-)
A protein found in egg yolk.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) biochem a phosphoprotein that is the major protein in egg yolk
[C19: from vitellus + -in]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(vɪˈtɛl ɪn, vaɪ-)

a phosphoprotein in the yolk of eggs.
[1855–60; vitell (us) + -in1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Furthermore, according to their cellular characteristics, 11 oocytes substages were distinguished: 1) oogonia (Og), 2) chromatin nucleolus (Cn), 3) early perinucleolus (Pn1), 4) late perinucleolus (Pn2), 5) oil globule (Li), 6) yolk globule (yg), 7) early vitellin globule (Ev1), 8) late vitellin globule (Vo2), 9) postvitelogenic (Pvo), 10) germinal vesicle migration (Gvm), and 11) germinal vesicle breakdown (Gvb) (Fig.
The embryos received a single dose of 0.1 [micro]g of Methylmercury II chloride (Sigma-Aldrich, USA) diluted in 50 [micro]L of saline solution, administered into the yolk sac near the vitellin vessels.
The vitellin glands are globular and located between nearly the middle of the body and the posterior of the hind testis.
Insulin and 20E increased the vitellogenin and vitellin amounts but decreased ecdysteroid content in ovaries.
Mating pair combinations of insecticide-treated male and female Nilaparvata lugens (Stal) (Hemiptera: Delphacidae) planthoppers influence protein content in the male accessory glands (MAGs) and vitellin content in both fat bodies and ovaries of adult females.
Furthermore, since yolk proteins such as vitellin and lipophorin readily aggregate under low ionic conditions, organellar membranes of a reasonable quality were isolated by including 0.3 mol [1.sup.-1] NaCl at each step (Azuma and Yamashita, 1985).
This result is due to the protective function of the egg cover, such as the vitellin, chitin and especially an internal glycolipid layer, which provides resistance to chemicals and prevents the entry of foreign substances (STIRLING & WEST, 1991; PERRY et al, 2009).
Several molecules were identified, like Bm95 (93), vitellin (94), 64P (95), trypsin inhibitors (96), SBm1462 (97), ferritin 2 (98) and subolesin (99-100).
La tumeur du sac vitellin est differenciee dans le sens extra-embryonnaire et reproduit des structures evocatrices du sac vitellin de l'homme.
Les trois premiers jours du developpement des larves ont montre une reduction progressive du sac vitellin suivie d'un passage a la nourriture exogene.
Believing in the potential for a better antiseptic formulation of silver, Barnes encouraged Hille to develop a technique for producing a non-irritant formulation: this effort was successful, through the use of a protein found in wheat and rye, to produce silver vitellin, an organic formulation that was named Argyrol.