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CHAPTER 3 - CONNECTIVE TISSUE
Histology Guide
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MICROGRAPH

NAME
EM 309 Lymph Node
TISSUE
Unknown
IMAGE SIZE
8,059 x 10,257 pixels
248 MB
FILE SIZES
132,727 KB (grayscale)
129,248 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
0.3800 µn
SOURCE
Tsuneo Fujita
Department of Anatomy
Niigata University
School of Medicine
Niigata, Japan

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EM 309 Lymph Node

Reticular Fibers

Scanning electron micrograph (SEM) of the reticular fibers of a medullary sinus in a lymph node.

Reticular fibers are composed of type III collagen that cross-links to form a fine meshwork.

  • (orange) - mostly B lymphocytes
  • (yellow) - easily identified by the small projections (pseudopodia) on their surface.
  • (tan) - slender, elongated processes span the sinus
    • Reticular Cells - stellate-shaped cells that produce and wrap around bundles of reticular fibers
    • Reticular fibers composed of type III collagen that cross-link to form a fine meshwork

An (red) and (blue) is seen passing through the pulp.

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