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Summary
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| Description | In both the PNS and CNS, programmed cell death occurs predominantly when the young neurons contact their designated target tissues (e.g., skin, or target neuron). However, the regulation of apoptosis is different. (A) In the PNS, apoptosis of the developing neurons is prevented by survival factors secreted by the target tissues (blocking arrow), which counteract the internal propensity to die (curved arrow). (B) By contrast, in the CNS, target tissue–derived signals do not seem to play a critical role in preventing neuronal cell death (dotted arrow). Rather, the decision to die or not is primarily determined intrinsically (curved arrow). The signals involved in regulating programmed cell death in the CNS are not well understood. | ||
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| Author or copyright owner |
Martijn P. J. | ||
| Source (WP:NFCC#4) | Science 5 April 2013: Vol. 340 no. 6128 pp. 39-41 DOI: 10.1126/science.1236152 | ||
| Date of publication | April 5, 2013 | ||
| Use in article (WP:NFCC#7) | Programmed cell death | ||
| Purpose of use in article (WP:NFCC#8) | This image corresponds to the section on the differences in programmed cell death between the central and peripheral nervous system. It summarizes the current view of the mechanisms that occur in the CNS and PNS. | ||
| Not replaceable with free media because (WP:NFCC#1) |
n.a. | ||
| Not replaceable with textual coverage because (WP:NFCC#1) |
The text might be rather complicated for a novice person in the sciences. The picture is a nice visual aid. | ||
| Minimal use (WP:NFCC#3) | There are currently no visual aids for this article. | ||
| Respect for commercial opportunities (WP:NFCC#2) |
n.a. | ||
| Other information |
| ||
| Fair useFair use of copyrighted material in the context of Programmed cell death//en.wiki.x.io/wiki/File:Programmed_cell_death_in_the_peripheral_and_central_nervous_system.jpgtrue | |||
Licensing
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 | This work is copyrighted (or assumed to be copyrighted) and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content § Images or Wikipedia:Non-free content § Audio clips, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work:
qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 21:09, 27 February 2014 | | 286 × 354 (32 KB) | Zbalmuth (talk | contribs) | Uploading an excerpt from a non-free work using File Upload Wizard |
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