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B-type chains, making half of the branches, have two branch points, and all chains have the same length.

• E. Meléndez-Hevia, R. Meléndez and E. I. Canela (2000) "Glycogen Structure: an Evolutionary View", pp. 319–326 in Technological and Medical Implications of Metabolic Control Analysis (ed. A. Cornish-Bowden and M. L. Cárdenas), Kluwer Academic Publishers, Dordrecht

Summary

DescriptionGlycogen structure.svg	English: 2-D cross-sectional view of glycogen: A core protein of glycogenin is surrounded by branches of glucose units. The entire globular complex may contain approximately 30.000 glucose units. (Description reference: Page 12 in: Exercise physiology: energy, nutrition, and human performance By William D. McArdle, Frank I. Katch, Victor L. Katch Edition: 6, illustrated Published by Lippincott Williams & Wilkins, 2006 ISBN 0781749905, 9780781749909, 1068 pages)
Date	27 May 2009
Source	Own work (Original text: Own work by uploader, using following images:) Glucose (Public Domain license). Glycogenin structure (Public Domain license). Structure reference: Similar image on scientificpsychic.com --> Carbohydrates - Chemical Structure. By Antonio Zamora on May 27, 2009
Author	Mikael Häggström. When using this image in external works, it may be cited as: Häggström, Mikael (2014). "Medical gallery of Mikael Häggström 2014". WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.008. ISSN 2002-4436. Public Domain. or By Mikael Häggström, used with permission.
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