File:Plasma cell clockface nucleus 01.jpg

From Embryology

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Plasma Cell "clockface" Nucleus

Nucleus has darker (heterochromatin) regions around periphery of nucleus separated by lighter (euchromatin) regions. This gives the stained nucleus the generic appearance of a "clock face" (not the correct scientific name).

  • Heterochromatin - tightly packed form of DNA
  • Euchromatin - loosely packed form of DNA.

Alternative nomenclature - activated B cell, plasma B cells, plasmocytes, effector B cells and B cell that is secreting antibody.

(Stain - Haematoxylin Eosin)

Immune Images: Oesophagus MALT | Colon MALT | Peyer's patch overview | Peyer's patch detail | Cartoon - IEL development | Cartoon - IEL function | Cartoon - IEL differentiation | Mesenteric Lymph Nodes overview | Palatine Tonsil | Tonsil | Immune System Development

Links: Histology | Histology Stains | Blue Histology images copyright Lutz Slomianka 1998-2009. The literary and artistic works on the original Blue Histology website may be reproduced, adapted, published and distributed for non-commercial purposes. See also the page Histology Stains.

Cite this page: Hill, M.A. (2024, June 19) Embryology Plasma cell clockface nucleus 01.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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