Licensing

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Description

This transmission electron micrograph of a section through a late orthochromatic erythroblast (normoblast) from human bone marrow shows shallow depressions along the membrane surface, indicated by arrows. The thickened membrane at these sites suggests the formation of coated vesicles during micropinocytosis in these erythropoietic cells. The nucleus contains much compact heterochromatin as transcription ceases and is followed by it's ejection.

Technical Details

Figure 53 from Chapter 2 (Specializations of the Free Surface) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website.

Biological Sources

NCBI Organism Classification
Homo sapiens
(human)
Cell Type
orthochromatic erythroblast
Cellular Component
coated vesicle
plasma membrane
nucleus

Biological Context

Biological Process
pinocytosis
nucleus organization

Attribution

Name
Don W. Fawcett
Published
ISBN 0721635849
Link
Fawcett's "The Cell, 2nd Ed."

Grouping

This image is part of a group.

Imaging

Image Type
transmission electron microscopy (TEM)
Imaging Mode
illumination by electrons
detection of electrons
Parameters Imaged
electron density
Source of Contrast
stain with broad specificity
Visualization Methods
osmium tetroxide
Data Qualifiers
processed data

Dimensions

Spatial Axis Image Size Pixel Size
X 914px ——
Y 1280px ——
*CIL – Cell Image Library accession number. Please use this to reference an image.