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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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Living or not? (viruses,viroids and prions).

... its host, the viral genome carried a lot of genes that replaced basic cellular functions, including some involved in DNA repair and the manufacturing ... virus picked up different genes from its hosts through a process called horizontal gene transfer. The authors favor the former explanation, because ...

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by Sumanth001
Sun Dec 08, 2013 12:37 pm
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
Replies: 15
Views: 11381

Re:

... the unused translation equipment may have been obtained through horizontal gene transfer, in which case they are not vestigial structures. ... lack genes for ribosomal proteins, making mimivirus dependent on a host cell for protein translation and energy metabolism. http://en.wikipedia.org/wiki/Mimivirus

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by wildfunguy
Sun Sep 29, 2013 4:16 pm
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
Replies: 15
Views: 11381

Why must we avert the genome of Eden?

... biology emerges. If the GOE is real, then it is possible that the first cells were not genetically simple organisms like bacteria, but primeval stem ... The trivial solution involves the adjustment of the assumed rate of horizontal gene transfer to the data (another ad hoc adjustment), but though ...

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by Hunor
Mon Sep 23, 2013 12:08 am
 
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 8129

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: 5256

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: 4664
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