News articles tagged with "biology"

07/03/2014 09:30:39
Jessica Stoller-Conrad
The symposium, titled "From the Brain to the Body and Back: A Celebration of Paul Patterson's Life in Science," was held on June 30.
09/18/2013 09:28:29
Kimm Fesenmaier
As many as 1 million nematode species are thought to live on Earth, and many are pests or parasites that ravage crops and spread diseases. They also happen to share many genes that are found in humans, and are intensively researched by labs around the world.
09/17/2013 11:14:55
Jessica Stoller-Conrad

During the past century, programmable technologies evolved from spinning gears and vacuum tubes to transistors and microchips.

08/18/2013 10:00:33
Katie Neith
The human body is full of tiny microorganisms—hundreds to thousands of species of bacteria collectively called the microbiome, which are believed to contribute to a healthy existence. The gastrointestinal (GI) tract—and the colon in particular—is home to the largest concentration and highest diversity of bacterial species. But how do these organisms persist and thrive in a system that is constantly in flux due to foods and fluids moving through it? A team led by California Institute of Technology (Caltech) biologist Sarkis Mazmanian believes it has found the answer, at least in one common group of bacteria: a set of genes that promotes stable microbial colonization of the gut.
07/18/2013 11:00:40
Kimm Fesenmaier
Biologists at the California Institute of Technology (Caltech) have worked out the details of a mechanism that leads undifferentiated blood stem cells to become macrophages—immune cells that attack bacteria and other foreign pathogens.
07/04/2013 12:40:08
Kimm Fesenmaier
A team of researchers led by newly arrived Caltech biologist Mitchell Guttman and Kathrin Plath of UCLA, has figured out how some RNA molecules take advantage of their position within the 3-D structure of genomic material to home in on targets.
06/26/2013 10:27:37
Katie Neith
For most terrestrial life on Earth, oxygen is necessary for survival. But the planet's atmosphere did not always contain this life-sustaining substance, and one of science's greatest mysteries is how and when oxygenic photosynthesis—the process responsible for producing oxygen on Earth through the splitting of water molecules—first began. Now, a team led by geobiologists at the California Institute of Technology (Caltech) has found evidence of a precursor photosystem involving manganese that predates cyanobacteria, the first group of organisms to release oxygen into the environment via photosynthesis.
06/11/2013 07:00:45
Marcus Woo
Researchers, led by scientists at Caltech, have used a well-known, noninvasive technique to electrically stimulate a specific region deep inside the brain, causing volunteers to judge faces as more attractive than before their brains were stimulated.
05/21/2013 09:58:03
Katie Neith
A team of researchers led by biologists at Caltech has found that, in mouse models, the molecule microRNA-146a (miR-146a) acts as a critical regulator and protector of blood-forming stem cells during chronic inflammation, suggesting that a deficiency of miR-146a may be one important cause of blood cancers and bone marrow failure.
05/20/2013 12:13:09
Douglas Smith
Professor of Chemistry Shu-ou Shan studies the gears and springs in the molecular machinery of life. She’ll be giving us a guided tour of the cellular assembly line at 8 p.m. on Wednesday, May 22, 2013 in Caltech’s Beckman Auditorium. Admission is free.
04/25/2013 10:37:00
Douglas Smith
Los Angeles has had bouts of smog since the turn of the 20th century. Angelenos might now be living in a state of perpetual midnight—assuming we could live here at all—were it not for the work of Caltech professor Arie Jan Haagen-Smit.
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