News articles tagged with "biology"

04/16/2014 14:25:50
Katie Neith
As reported in a paper published online today in the journal Nature, Caltech biologist David J. Anderson and his colleagues have genetically identified neurons that control aggressive behavior in the mouse hypothalamus, a structure that lies deep in the brain. Researchers have long known that innate social behaviors like mating and aggression are closely related, but the specific neurons in the brain that control these behaviors had not been identified until now.
10/08/2013 11:39:13
Kimm Fesenmaier

Mitchell Guttman is a new assistant professor of biology on campus. He just arrived last month, having recently completed a fellowship at the Broad Institute of MIT and Harvard.

09/23/2013 09:30:41
Jessica Stoller-Conrad
When termites munch on wood, the small bits are delivered to feed a community of unique microbes living in their guts, and in a complex process involving multiple steps, these microbes turn the hard, fibrous material into a nutritious meal for the termite host. One key step uses hydrogen to convert carbon dioxide into organic carbon—a process called acetogenesis—but little is known about which gut bacteria play specific roles in the process.
09/22/2013 17:16:29
Kathy Svitil
The California Institute of Technology (Caltech), in a move that creates an academic division unlike any other among its peer institutions, has combined the disciplines of biology and biological engineering into a new Division of Biology and Biological Engineering (BBE).
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.
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