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42 Current news about the topic biology

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A new way to stimulate cellular recycling process

18-May-2018

Brown University researchers studying the biology of aging have demonstrated a new strategy for stimulating autophagy, the process by which cells rebuild themselves by recycling their own worn-out parts. In a study the researchers show that the approach increased the lifespans of worms and flies, ...

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Stone age hepatitis B virus decoded

Viral DNA shows the hepatitis B virus has been circulating in Europe for at least 7.000 years

14-May-2018

An international team of scientists led by researchers at Kiel University in the scope the CRC 1266 “Scales of Transformation” and the Max Planck Institute for the Science of Human History has successfully reconstructed genomes from Stone Age and Medieval European strains of the hepatitis B ...

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Understanding how DNA is selectively tagged with 'do not use' marks

09-May-2018

Not all of your genome needs to be active at any given time. Some regions are prone to hopping around the genome in problematic ways if left unchecked; others code for genes that need to be turned off in certain cells or at certain times. One way that cells keep these genetic elements under ...

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Night owls have higher risk of dying sooner

13-Apr-2018

"Night owls" - people who like to stay up late and have trouble dragging themselves out of bed in the morning - have a higher risk of dying sooner than "larks," people who have a natural preference for going to bed early and rise with the sun, according to a new study from Northwestern Medicine ...

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Surprise finding points to DNA's role in shaping cells

12-Feb-2018

As a basic unit of life, the cell is one of the most carefully studied components of all living organisms. Yet details on basic processes such as how cells are shaped have remained a mystery. Working at the intersection of biology and physics, scientists at the University of California San Diego ...

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Opening the cavity floodgates

Biochemists investigate the transport of large proteins through bacterial cell membranes

25-Jan-2018

Every cell is surrounded by a membrane, which ensures the internal biochemical milieu and regulates the exchange of substances with its surroundings. In every cell membrane, there are a large number of transporters that allow only one sort of molecule to pass through. In the case of very small ...

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DNA study casts light on century-old mystery of how cells divide

22-Jan-2018

Scientists have solved a longstanding puzzle of how cells are able to tightly package DNA to enable healthy cell division. Their findings shed light on how single cells can compact DNA 10,000-fold to partition it between two identical cells - a process that is essential for growth, repair and ...

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Super-silenced DNA hints at new ways to reprogram cells

09-Jan-2018

Newly described stretches of super-silenced DNA reveal a fresh approach to reprogram cell identity to use in regenerative medicine studies and one day in the clinic, according to a study by investigators from the Perelman School of Medicine at the University of Pennsylvania. "In the past, most ...

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Less chewing the cud, more greening the fuel

09-Jan-2018

Plant biomass contains considerable calorific value but most of it makes up robust cell walls, an unappetising evolutionary advantage that helped grasses to survive foragers and prosper for more than 60 million years. The trouble is that this robustness still makes them less digestible in the ...

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Spaghetti-like, DNA 'noodle origami' the new shape of things to come for nanotechnology

18-Dec-2017

For the past few decades, scientists have been inspired by the blueprint of life, DNA, as the shape of things to come for nanotechnology. This burgeoning field is called DNA origami. Scientist borrowed its moniker from the paper artists who conjure up birds, flowers and planes from imaginatively ...

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