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Limb bud

Limb bud

The limbs of vertebrates start as outpushings of mesenchyme surrounded by a simple epithelium. The distal region is referred to as the progress zone. There has been extensive study of positional information within the limb bud that determines, for example: the proximal distal pattern of bone development and the anterior posterior specification of digits.

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organs shape

... such as Dpp in the Drosophila wing disc and Shh in the vertebrate limb bud (Day and Lawrence 2000). In immature small primordia, the gradients are steep and cells ...

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by animus
Thu Jun 28, 2012 4:41 pm
Forum: Human Biology
Topic: organs shape
Replies: 1
Views: 4498

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