Anterior regeneration in the hemichordatePtychodera flava
نویسندگان
چکیده
منابع مشابه
Regeneration in the hemichordate Ptychodera flava.
When the body of P. flava is severed, the animal has the ability to regenerate its missing anterior or posterior as appropriate. We have focused on anterior regeneration when the head and branchial regions are severed from the body of the worm. After transection, the body wall contracts and heals closed in 2 to 3 days. By the third day a small blastema is evident at the point of closure. The bl...
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The Yellow Wagtail, Motacilla flava Linnaeus, Motacillidae (Passeriformes : Aves) is a slender 15 16 cm long bird that inhabits open country near water such as wet meadows. Cytological investigation depicted the diploid chromosome count between 78 and 85 with 80 as modal value. No structural uncertainty was observed between macroand microchromosomes. Z W were fourth in order of size, both sub-m...
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چکیده ندارد.
15 صفحه اولHead regeneration in hemichordates is not a strict recapitulation of development
BACKGROUND Head or anterior body part regeneration is commonly associated with protostome, but not deuterostome invertebrates. However, it has been shown that the solitary hemichordate Ptychodera flava possesses the remarkable capacity to regenerate their entire nervous system, including their dorsal neural tube and their anterior head-like structure, or proboscis. Hemichordates, also known as ...
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The ligamenta flava, together with the vertebral lamina, form the posterior wall of the spinal canal. Since they are located immediately adjacent to the nerve structures of the spinal cord, every pathology that involves hypertrophy produces neurological disturbances as a result. One of the most common reasons for hypertrophy of the ligamenta flava is heterotopic ossification. The main regions o...
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ژورنال
عنوان ژورنال: Developmental Dynamics
سال: 2008
ISSN: 1058-8388,1097-0177
DOI: 10.1002/dvdy.21747