Tag: "revert" at biology news
Changing colors in mice
...l supplement is added to their drinking water, and revert
back to their original color once the supplement is removed! Dr. Scrable and colleagues genetically engineered the bacterial lac operon for use as an inducible gene regulatory system in the mouse. The lac regulatory system in the mouse provides tigh...
Amoebas use "midwives" to reproduce
...ail to disconnect. After a while they give up, and revert
to being a single cell, which now has two nuclei. A collaborative study by physicists and biologists at the Weizmann Institute has now revealed a third scenario, involving a "midwife" amoeba. Prof. Elisha Moses of the Physics of Complex Systems Depar...
Epstein-Barr virus linked to invasive breast cancer and lymphoma
...body's natural immune response forces the virus to revert
to its latent phase -- where it hides inside the nucleus of immune cells called lymphocytes without producing any symptoms. Even though the virus is endemic in humans, Robertson emphasizes that most cells infected by the virus may never become mali...
Cancer's penchant for developing drug resistance is a result of chromosome reassortment, UC Berkeley scientist proposes
...ome is lost. One possible way to force a cancer to revert
from drug-resistant to drug-sensitive is to exploi...have become drug resistant sometimes spontaneously revert
and again become sensitive to drugs, something expected from the unstable nature of aneuploidy, he s...
One-two punch knocks out fly genes
... of the body color gene--and make the yellow flies revert
to their normal brown--Drs. Golic and Rong took a normal, error-free version of the body color gene and modified it slightly for the knock-in procedure. The only thing different about the normal body color gene that Drs. Golic and Rong used was t...
Adult stem cells can produce a wealth of cell types, Science authors report
...ells or within an embryo, the adult stem cells can revert
to an unspecialized state and give rise to different cell lineages, according to the Science study. The research, completed by a team of Swedish scientists, adds to a growing body of data indicating that adult stem cells, like embryonic stem cells,...
Deadly to cattle and humans, prions may help other organisms survive, researchers find
...e the DNA has mutated, the organism cannot readily revert
to its original genetic makeup to adapt, for examp...ecting the genes that code for it, the protein can revert
back to its original function, either spontaneously or with the help of molecular chaperones, the re...
Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia
... emu eggshell documents that the ecosystem did not revert
to its state that prevailed prior to the arrival of humans. C4 grass abundances were below the levels established before the glacial period. Over the last 65,000 years, the researchers conclude, environmental factors other than climate have significa...
Adult Cells Undergo Identity Switch Reported In Science
...testhat neural stem cells, or "NSCs," were able to revert
to their unspecialized,embryonic state and then re-specialize as hematopoietic stem cells. To furtherinvestigate whether this process was in fact occurring, the researchers alsoinjected a second group of irradiated mice with foreign hematopoietic ste...
New Anti-Microbial Agent Destroys Anthrax
...ipids fuse with anthraxspores causing the spore to revert
to its active bacterial state. During thisprocess, which takes four to five hours, the spore's tough outer membranechanges allowing BCTP's solvent to strip away the exterior membrane. BCTP'sdetergent then degrades the spore's interior contents. In...
MSU Scientists Eavesdrop On Bacterial
...olony they undergo another biochemical change and revert
back to theplanktonic, free floating type. "But there still was one unanswerable question: How could they have sucha complex [biofilm] structure without cell-cell signaling," said Bill Costerton,who heads the MSU Center for Biofilm Engineerin...
Transplanted Neurons Restore Function In Rats After Stroke
... rats. Furthermore, the tumor-derived cells didnot revert
to abnormal tissue growth after transplantation into the brains ofrats. "This suggests that human neuronal cell transplantation may be a usefulalternative to fetal tissue in treating strokes and other neurodegenerativedisorders," says Paul R....