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CHAPTER 1 - THE CELL
Histology Guide
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MICROGRAPH

NAME
EM 003 Centriole
TISSUE
Unknown
IMAGE SIZE
10,166 x 8,161 pixels
249 MB
FILE SIZES
44,857 KB (grayscale)
45,079 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
0.428 nm
SOURCE
Stanley L. Erlandsen
Department of Genetics, Cell Biology and Development
School of Medicine
University of Minnesota
Minneapolis, MN

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EM 003 Centriole

Centriole

Transmission of electron microscopy (TEM) of a cross-section of a centriole.

Centrioles play a key role in organizing microtubules in the cytoplasm. During cell division, they are opposite poles of the spindle that separates chromosomes into daughter cells. They also form the basal bodies that give rise to cilia and flagella.

  • Centriole (orange) - composed of nine sets of triplet microtubules arranged in a cylindrical shape
    • Pericentriolar Material (yellow) - proteins that provide a scaffold for microtubule nucleation
  • Desmosomes - disc-shaped structures joining the cell surface of adjacent cells
    • Attachment Plaques (blue) - dense protein plaque inside the plasma membrane connected to keratin filaments
    • Cadherins (purple) - transmembrane linker proteins that span the extracellular space between adjacent cell membranes
  • Keratin Filaments (tan) - intermediate filaments
  • Mitochondria (red)
  • Endoplasmic Reticulum (cyan)
  • Cytoplasm (green)
  • Plasma Membrane (dark green)
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