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Horizontal cell

Horizontal cell

a type of nonspiking interneuron found in the retina, named for its morphology. Horizontal cells process the information from a large number of photoreceptors and synapse onto ganglion cells and other cell types in the retina.


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cellular mechanisms that result in symptoms of cholera

... binds to GM1 gangliosides on the surface of the intestinal epithelium cells. The A1 portion of the A subunit is an enzyme that ADP-ribosylates ... The gene encoding the cholera toxin is introduced into V. cholerae by horizontal gene transfer. Virulent strains of V. cholerae carry a variant ...

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by adithya528
Tue Dec 11, 2012 1:49 pm
 
Forum: Cell Biology
Topic: cellular mechanisms that result in symptoms of cholera
Replies: 4
Views: 1064

Evolution is not Darwinian

... ): molecular phylogeny and the existence of at least three distinct cell kingdoms. Lynn Margulis (1938-2011): cell mergers/symbiogenesis as a ... 21st Century (2011) has written that evolutionary mechanisms such as horizontal gene transfer, symbiogenesis, whole genome doubling and natural ...

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by Forests
Wed Sep 26, 2012 3:29 pm
 
Forum: Evolution
Topic: Evolution is not Darwinian
Replies: 4
Views: 1241

Re: Creation of species through programmed evolution

... on random mutations on which Darwin’s theory is based. The discovery of cell-directed mutagenesis, which indirectly proves new program has come into ... different species has been well documented in biology literature. The horizontal gene (DNA) transfer (HGT) observed is a reflection of biosoftware ...

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by PAWahid
Sat Jan 28, 2012 8:24 am
 
Forum: Evolution
Topic: Creation of species through programmed evolution
Replies: 15
Views: 4785

Re: Creation of species through programmed evolution

... assumption is wrong. It has been shown experimentally that mutation is cell-induced phenomenon meaning that changes in DNA take place based on the ... species. This is a well-established fact. In fact the concept of horizontal gene transfer is based on the observation of identical DNA segments ...

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by PAWahid
Wed Jan 25, 2012 9:08 am
 
Forum: Evolution
Topic: Creation of species through programmed evolution
Replies: 15
Views: 4785

Re: Theories - Origin of Life

... What Nematode genomes tell us about the importance of horizontal gene transfers in the evolutionary history of animals Definition ... of an animal . Animals have a separate germline and HGT must reach cells in the germline to have a chance to be transmitted to the offspring, ...

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by scottie
Tue Jan 17, 2012 11:04 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 548
Views: 534371
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