Palay, Sanford; Fawcett, Don W. (2021). CIL:11830, Felis catus, CNS neuron (sensu Vertebrata). In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J00C4TK9

Transmission electron micrograph showing the inactive X chromosome (labeled Sex Chromatin), and also known as the Barr body, adpressed to the nucleolus in this section through the nucleus of a spinal cord neuron from a female cat. The inactive X chromosome is typically highly condensed, in keeping with the observation that it is largely inactive in transcription.

• 2021

• Fawcett, Don W.
• Palay, Sanford

Originally from S. Palay (1976), The Fine Structure of the Nervous System, reprinted with permission as Figure 136 from Chapter 4 (Nucleus) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the corresponding chapter is available on the ASCB's BioEDUCATE website.

Preparation: tissue in plastic embedment; osmium tetroxide fixed tissue
Relation to intact cell: microtome-sectioned tissue
Item type: film
Imaging mode: transmission electron microscopy (TEM); detection of electrons
Parameter imaged: electron density
Source of contrast: differences in adsorption or binding of stain
Visualization methods: uranyl salt; osmium tetroxide; lead salt
Processing history: Image extracted from .pdf file of 'The Cell'
Data qualification: Processed

• Cell Image Library Group ID: 11212

• Felis catus

• Barr body
• CNS neuron (sensu Vertebrata)
• Nuclear chromatin
• Nucleolus

• Nucleolus organization
• Nucleus organization
• RNA metabolic process

• data
• image

• No linguistic content; Not applicable

Samplenumber: 11830

Doi: https://doi.org/10.6075/J00C4TK9

Source data

• Source Record in the Cell Image Library: https://doi.org/10.7295/W9CIL11830

Other resource

• Fawcett, Don W. "The Cell" Chapter 4 (Nucleus). 2nd ed., W.B. Saunders, 1981. https://www.ascb.org/career-development/teaching/don-fawcetts-the-cell/

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2022-08-12