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CHAPTER 3 - CONNECTIVE TISSUE
Histology Guide
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MICROGRAPH

NAME
EM 120 Adipocyte
TISSUE
Loose Connective Tissue
IMAGE SIZE
8,326 x 7,012 pixels
99 MB
FILE SIZES
45,700 KB (grayscale)
58,400 KB (color)
MAGNIFICATION
5,000x
PIXEL SIZE
3.403 nm
SOURCE
Tatsuo Ebe
Shigeru Kobayashi
Department of Anatomy
Niigata University School of Medicine
Niigata, Japan

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EM 120 Adipocyte

Adipocyte

Transmission electron micrograph (TEM) of an adipocyte (fat cell) from the subcutaneous tissue of a 6-month fetus. An immature fat cell is shown here because mature adipocytes are so large that it is hard to take their whole profile in a micrograph.

Adipocytes are derived from mesenchymal stem cells (adipogenesis). In an early stage of the cell’s development, many lipid droplets occur in the cytoplasm. Then, the lipid inclusions increase in size and coalesce to form a single droplet of large size.

The nucleus is pressed to one side of the cell by the large lipid droplet. The cytoplasm is reduced to a thin rim containing mitochondria.

  • Nucleus (blue) / Nuclear Envelope (purple)
  • Mitochondria (red)
  • Endoplasmic Reticulum (cyan)
  • Lipid Droplets (yellow)
  • Cytoplasm (green)

Fibroblasts (tan) and collagen Fibers (purple) are also seen.

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