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100 results for Biochemistry

Lineage Trees Reveal Cells' Histories
Lineage Trees Reveal Cells' Histories

https://www.weizmann-usa.org/news-media/news-releases/lineage-trees-reveal-cells-histories/

Feb 23, 2012... Prof. Ehud Shapiro's research team.
REHOVOT, ISRAEL—February 23, 2012—In recent years, a number of controversial claims have been made about the female mammal's egg supply, including that it is renewed over her adult lifetime (as opposed to the conventional understanding that she is born with all of her eggs) and that the source of these eggs is stem cells that originate in the bone marrow. Now, researchers at the Weizmann Institute of Science have disproved one of those claims and pointed in new directions toward resolving the other. Their findings, based on an original method for reconstructing lineage trees for cells, were published online February 23 in PLoS Genetics.

TAGS: Genetics, Biochemistry, Biology, Fertility

Believe It or Not, White Bread Might Actually Be “Better” For Some of Us
Believe It or Not, White Bread Might Actually Be “Better” For Some of Us

https://www.weizmann-usa.org/news-media/in-the-news/believe-it-or-not-white-bread-might-actually-be-better-for-some-of-us/

Jun 09, 2017... Image via Shutterstock
When it comes to bread, we’ve known for a long time now that it’s better to pick the brown, whole-grain-y stuff over ultra-processed white bread. Right?
Well, maybe not, according to a new study published in Cell Metabolism and reported on by Science Daily. Apparently, we should be focusing less on the bread itself and more on who’s eating it.
Here’s how the study went down: Researchers at the Weizmann Institute conducted a randomized trial with 20 healthy subjects in order to figure out how processed white bread and “artisanal whole wheat sourdough” might affect the human body in different ways. Half of the participants were asked to eat more white bread for one week than they normally did, and the other half was assigned to eat more whole wheat sourdough. Then, there was a controlled 2-week period with no bread, after which time the two groups swapped diets. The half that had originally consumed the white bread switched over to whole wheat, and vice versa.

TAGS: Culture, Biochemistry, Bacteria, Nutrition

Weizmann in Focus, Episode 11: Time to Get Fit
Weizmann in Focus, Episode 11: Time to Get Fit

https://www.weizmann-usa.org/news-media/video-gallery/weizmann-in-focus-episode-11-time-to-get-fit/

Feb 07, 2020... We’re well into the New Year and many of us have resolved to get fit in 2020 … but does the time we work out make a difference? In the latest episode of Weizmann in Focus, Dave Doneson discusses the research of Dr. Gad Asher, who studies the effects of our biological clocks on everything from fitness to jetlag to liver disease.
Find out Dr. Asher’s take on whether mornings or evenings are the best time to hit the gym. Please share the video with friends via email or social media.

TAGS: Culture, Community, Biochemistry, Biology, Philanthropy, Leadership, Metabolism

Blast of Thin Air Can Reset Circadian Clocks
Blast of Thin Air Can Reset Circadian Clocks

https://www.weizmann-usa.org/news-media/news-releases/blast-of-thin-air-can-reset-circadian-clocks/

Oct 27, 2016... Dr. Yaarit Adamovich and Dr. Gad Asher
We might not be aware of our internal “body clocks” until we are jetlagged, but scientists continue to puzzle over what drives them. Now, in a study published on October 20 in Cell Metabolism, the Weizmann Institute of Science’s Dr. Gad Asher has found that changes in surrounding oxygen levels can reset the circadian clocks of mice. If confirmed in humans, the research could help inform how airlines moderate cabin air pressure.

TAGS: Culture, Biochemistry, Biology

UN Talks Superbugs; Weizmann Takes Action
UN Talks Superbugs; Weizmann Takes Action

https://www.weizmann-usa.org/news-media/feature-stories/un-talks-superbugs-weizmann-takes-action/

Sep 21, 2016... Prof. Ada Yonath
One of the biggest advances in the history of humankind is the development of antibiotics. They have saved untold millions of lives; rendered toothless diseases that were killers for millennia; and are one of the factors behind humanity’s increasingly long lifespan.
However, like all life forms, bacteria have an imperative: reproduce and live. And they are very good at it. Rapid evolvers, they continually seek ways to get around our killer drugs. And they’re succeeding.

TAGS: Culture, Biochemistry, Evolution, Bacteria

Bringing DNA Computers to Life
Bringing DNA Computers to Life

https://www.weizmann-usa.org/news-media/in-the-news/bringing-dna-computers-to-life/

May 01, 2006... This article can be viewed by downloading the PDF.

TAGS: Biochemistry, Computers

Discovery of How Newborn Mice Repair Bone Fractures Could Improve Treatments
Discovery of How Newborn Mice Repair Bone Fractures Could Improve Treatments

https://www.weizmann-usa.org/news-media/in-the-news/discovery-of-how-newborn-mice-repair-bone-fractures-could-improve-treatments/

Oct 27, 2014... (A-D) This image shows H&E and Safranin O/Fast Green staining of sections through the fracture site during the healing process (P3–P9). Scale bar, 2 mm. (A'-D') Magnifications of the boxed areas are in the upper panel. The dashed lines separate between the concave side (on the right) and convex side. The red arrow indicates cells appearing as chondrocytes, and black arrows indicate cells appearing as hypertrophic chondrocytes. (A''-D'') As indicted by Safranin O staining (pink-to-red colors), as the healing process progresses the soft callus is increasingly composed of cartilage. Scale bar, 200 mm. Credit: Developmental Cell, Rot et al.

TAGS: Biochemistry, Biology, Materials

What Gives the Beach That Smell? Sulfur-Making Algae
What Gives the Beach That Smell? Sulfur-Making Algae

https://www.weizmann-usa.org/news-media/in-the-news/what-gives-the-beach-that-smell-sulfur-making-algae/

Jun 30, 2015... Close your eyes and conjure up your paradise vacation: umbrellaed drink in hand, trashy detective novel perched on your knee, the rhythmic swell of waves in your ears, and of course – the fresh, briny smell of the sea.
That poetic smell comes, in part, from a not-so-poetically-named sulfur compound called dimethyl sulfide, or DMS, a key player in ocean ecosystems and weather patterns. Now, scientists from the Weizmann Institute of Science in Israel have figured out how a particular ocean algae – one that dwells in the upper sunlit part of the sea – makes the aromatic chemical.

TAGS: Environment, Climate change, Plants, Biochemistry, Senses, Enzymes

Evolution Not Only About Natural Selection but Also Improvisation, Says Israeli Scientist
Evolution Not Only About Natural Selection but Also Improvisation, Says Israeli Scientist

https://www.weizmann-usa.org/news-media/in-the-news/evolution-not-only-about-natural-selection-but-also-improvisation-says-israeli-scientist/

Jun 01, 2017... Prof. Yoav Soen sounds almost angry when he talks about the evolutionary concept of natural selection – or, more precisely, its total acceptance – suggesting it blinds people to thinking more broadly. Instead, they simply embrace the theory of evolution developed more than 150 years ago by Charles Darwin.
The blind allegiance to natural selection is a worldwide phenomenon, which is reflected in how research is conducted and scientific questions are explained, says the biomolecular scientist at the Weizmann Institute of Science, Rehovot.

TAGS: Culture, Biochemistry, Biology, Evolution

Defending Against Chemical Acts of Terrorism
Defending Against Chemical Acts of Terrorism

https://www.weizmann-usa.org/news-media/news-releases/defending-against-chemical-acts-of-terrorism/

Apr 19, 2012... Researchers may have found a way to protect us against otherwise deadly chemical attacks, such as the subway sarin incident in Tokyo that left thirteen people dead and thousands more injured or with temporary vision problems. The method is based on a new and improved version of a detoxifying enzyme produced naturally by our livers, according to the report in the April 2012 issue of Chemistry & Biology, a Cell Press publication.

TAGS: Biochemistry, Security, Enzymes

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