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Genetics News
Thu, 16 Nov 2017 17:24:52 EST
Unlocking the secrets of Ebola
Scientists have identified a set of biomarkers that indicate which patients infected with the Ebola virus are most at risk of dying from the disease. The results come from one of the most in-depth studies ever of blood samples from patients with Ebola. Researchers found 11 biomarkers that distinguish fatal infections from non-fatal ones and two that, when screened for early upon symptom onset, accurately predict which patients are likely to die.
Thu, 16 Nov 2017 14:21:46 EST
How Snapdragons keep their color: Signposting trick reveals evolutionary mechanism
A study of the colour patterns among wild flowers in a mountain valley has yielded a clue about how nature controls fundamental evolutionary change in all species.
Thu, 16 Nov 2017 14:20:58 EST
How the immune system identifies invading bacteria
Never-before-seen images of mouse immune system proteins and bacterial bits reveal an inspection strategy that identifies pathogens.
Thu, 16 Nov 2017 14:20:36 EST
Passenger pigeon genome shows effects of natural selection in a huge population
The passenger pigeon is famous for the enormity of its historical population and for its rapid extinction in the face of mass slaughter by humans. Yet it remains a mystery why the species wasn't able to survive in a few small populations. One theory, consistent with the findings of a new study, suggests that passenger pigeons were well adapted to living in huge flocks, but poorly adapted to living in smaller groups.
Thu, 16 Nov 2017 13:28:00 EST
Paraplegic rats walk and regain feeling after stem cell treatment
Paralyzed rats implanted with engineered tissue containing human stem cells were able to walk independently and regained sensory perception in their hind legs and tail. The implanted rats also show some degree of healing in their spinal cords. The research demonstrates the great potential of stem cells to treat spinal cord injury.
Thu, 16 Nov 2017 13:27:57 EST
Bacterium in a beetle makes it a leaf-eater
A leaf-eating beetle has evolved a symbiotic relationship that allows the insect to break down pectin. The findings on the novel function of the bacterium, which has a surprisingly tiny genome -- much smaller than previous reports on the minimum size required for an organism not subsisting within a host cell.
Thu, 16 Nov 2017 13:27:19 EST
Diffusion plays unusual signaling role in drosophila embryos, researchers find
Diffusion plays an unexpected role in cell differentiation during the early stages of development in the embryos of Drosophila, or fruit flies, researchers have found. Instead of spreading a molecular signal out, it was found that diffusion, facilitated through a carrier molecule, actually concentrates the signal in one place.
Thu, 16 Nov 2017 13:26:47 EST
Gene discovery may halt worldwide wheat epidemic
A gene that enables resistance to a new devastating strain of stem rust, a fungal disease that is hampering wheat production throughout Africa and Asia and threatening food security worldwide, has been identified by scientists.
Thu, 16 Nov 2017 10:50:11 EST
New procedures for DNA stability
In eukaryotic cells the proximity of the genes to the nuclear pores, which are found in the nuclear membrane, contributes to maintaining the integrity of the genome. This is due to the fact that the anchoring of DNA to the pore during transcription avoids the formation of DNA-RNA hybrids, which are a natural source of DNA breaks and genome instability.
Wed, 15 Nov 2017 15:56:20 EST
Potential cell receptors to reduce antibiotic resistance identified
The bacterium Pseudomonas aeruginosa is the leading cause of hospital-acquired infections. The pathogen is resistant to many antibiotics so treating those infections, particularly in patients with compromised immune systems, is difficult. A new study has identified certain chemical receptors in cells that could deceive the bacteria and improve patient response to drugs.
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