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difficulty in Biological Definition

Antigenic shift

... influenza combine to form a new subtype having a mixture of the surface antigens of the two original strains. Because the human immune system has difficulty recognizing the new influenza strain, it may be highly dangerous. Antigenic shift is contrasted with antigenic drift which is the natural ...

Ebola

... obviously for security reasons. However, scientists do say that altering the Ebola virus for biological warfare is possible although unlikely. The difficulty in changing Ebola to a potential weapon is twofold: first, the Ebola virus would have to be airborne to be effective. Although some have noted that ...

Eukaryote

... have also been proposed for the nucleus and eukaryotic flagella , but this is not generally accepted, both from a lack of cytological evidence and difficulty in reconciling this with cellular reproduction. Cytoskeletal structures Many eukaryotes have slender motile projections, usually called ...

Gene therapy

... small viruses with a genome of single stranded DNA. There are a few disadvantages to using AAV, mainly the small amount of DNA it can carry and the difficulty in producing it. This type of virus is being used, however, because it is non-pathogenic (most people carry this harmless virus). In contrast to ...

Ion channel

... by Roderick MacKinnon using X-ray crystallography won a share of the 2003 Nobel Prize in Chemistry . Because of their small size and the difficulty of crystallizing integral membrane proteins for X-ray analysis, it is only very recently that scientists have been able to directly examine what ...
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(Date:8/27/2014)... step in understanding the mysteries of the human genome ... that provide the most detailed comparison yet of how ... function. , The research, appearing August 28 in ... information encoded in the three species, genomes is "read ... into chromosomes. , The results add billions of entries ...
(Date:8/27/2014)... million years ago a group of fish began exploring land ... mammals. But just how these ancient fish used their fishy ... processes were at play remain scientific mysteries. , Researchers ... turned to a living fish, called Polypterus , to ... to walk out of the water. Polypterus is ...
(Date:8/27/2014)... By manipulating neural circuits in the brain of ... specific memories. The research, led by Howard Hughes ... Institute of Technology (MIT), reveals that the connections ... contextual information about an experience and the part ... of that experience are malleable. , Altering ...
Breaking Biology News(10 mins):Encyclopedia of how genomes function gets much bigger 2Encyclopedia of how genomes function gets much bigger 3Encyclopedia of how genomes function gets much bigger 4Walking fish reveal how our ancestors evolved onto land 2Researchers change the emotional association of memories 2Researchers change the emotional association of memories 3Researchers change the emotional association of memories 4
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Breaking Medicine News(10 mins):Health News:Tea Leaves Health Begins Important New Partnership with Gigya 2Health News:Tea Leaves Health Begins Important New Partnership with Gigya 3Health News:Step for Hope and Raise Brain Aneurysm Awareness 2Health News:MMAR Medical Announces Customer Membership Program 2Health News:Tips on Automating the Revenue Cycle Process with Medical Billing 2Health News:Tips on Automating the Revenue Cycle Process with Medical Billing 3Health News:Cloud PBX Provider UniVoIP Gets Certified by the State of California and the County of Los Angeles Under the Local Small Business Enterprise (SBE) Preference Program 2
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