Deconstructing the organizer
Article Abstract:
The 'organizer' is an important concept in animal development and involves cells that send signals affecting neighboring cells and leading to spatial patterning. Houart et al have located an organization center that has a role in brain patterning, which can be found in zebrafish neuroaxis at the prospective anterior end. A view is emerging that the neural plate can be patterned by planar signals from organizing centers at boundary locations, especially the posterior and anterior boundaries.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Dancing dendrites
Article Abstract:
Actin-rich dendritic spines are around 1 mum in diameter, protruding from the sides of dendrites and receiving excitatory inputs. Fischer and colleagues have shown than the dendritic spines change position and shape continuously, although they very little in a cross section area. Videomicroscopy was used to monitor changes and movement seen to be clearly mediated by actin polymerization, and inhibited by cytochalasin.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
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