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Tag: "grew" at biology news

Reef warns of sea level rise

... big sea level rise. "At the time when this reef grew we know that atmospheric CO2 levels were high, climate had warmed, that the northern icesheets had melted significantly and that sea levels rose - before dropping by around 130 metres again as the ice-age returned and locked up water," Prof. McCulloc...

How mammals fuel milk production may have implications for cancer

... by normal mothers. That difference in weight only grew more exaggerated with time. In contrast, the researchers reported, the offspring of Akt2-deficient mice gained weight normally. The researchers further showed that the mice without Akt1 displayed a four-fold reduction in milk secretion compared to...

Researchers link ocean organisms with increased cloud cover and potential climate change

...y of the new link between clouds and the biosphere grew out of efforts to explain increased cloud cover observed over an area of the Southern Ocean where a large bloom of phytoplankton was occurring. Based on satellite data, the researchers hypothesized that airborne particles produced by oxidation of th...

Novel experiment documents evolution of genome in near-real time

...netics's Website, the researchers report that they grew E. coli in an environment that favored the emergen...th mutations in the so-called glycerol kinase gene grew 20 to 60 percent faster than those without the mutation. Mutations also appeared in a second, unre...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...s. "We didn't know if the reason that the babies grew up to be abusive was that they watched how their mothers parented and repeated their behavior or whether their early experience produced long-term changes in brain processes that regulate emotions. We also noticed that about half of the babies expos...

U of MN researchers turn cord blood into lung cells

... an endoderm-type cell. By testing the cells that grew with various methods, they were able to find cells that exhibited key markers present in type II alveolar cells....

Music genes and musical geniuses

... of combining music and genetics in a single event grew up within the European Genetics Foundation, on initiative of Professor Giovanni Romeo, medical geneticist at the University of Bologna: “We realized how music is in itself an extraordinary communication vehicle, also when discussing scientific topics...

When smell cells fail they call in stem cell reserves

...t the newly grown cells, both nerve and non-nerve, grew from HBCs-a population of cells not previously known for repair abilities. “We were stunned because HBCs normally don’t grow much or do anything,?says Reed. “And the most surprising thing is that HBCs can grow into both nerves and non-nerve cells; th...

Prehistoric mystery organism verified as giant fungus

...gic factors. As for why these bizarre organisms grew so large, "I’ve wondered whether it enabled Protot... and elephants that came much later, they probably grew too slowly to rebuild from regular disturbances of any kind, Boyce said. "It’s hard to imagine th...

Statin plus cancer drug deliver combo punch to brain cancer cells

...nd animals. Its connection to anti-cancer efforts grew out of later insights into its blockage of hedgehog, which gets its name from spiky hairs that develop on fruit flies lacking the signal. "We already knew from earlier research that hedgehog controls brain cell survival and growth, and that blockin...

Study uncovers a lethal secret of 1918 influenza virus

...uman victims in 1918. Upon infection, the virus grew rapidly in the infected animals, suggesting the agent somehow sets the stage for virulent infection: "Somehow, early in infection, this virus does something to the host that allows it to grow really well," says Kawaoka. "But we don't know what that i...

Cheaper, better disease treatments expected from faster approach to developing antibodies

...o the PA. Van Blarcom then took those bacteria and grew large numbers of them to begin refining the steps needed for mass-scale production of promising therapeutic antibodies. ...

New cell type identified in cancer development

...ditional mutations in different cell types as they grew and spread. Additional experiments revealed that the piwil2 gene may exclusively regulate the process of pCSC development. Gao says these data suggest some important characteristics of pCSCs. "First, it appears that pCSCs require some ...

Scientists clone mice from adult skin stem cells

...e best efficiency, yielding 19 pups, nine of which grew up into normal, healthy, breeding adult mice. This is not the first time scientists have tried to use adult stem cells to clone mice. Experiments using adult hematopoetic stem cells ?the cells in the bone marrow that all blood cells are derived fr...

Scientists discover new, readily available source of stem cells

... mice with a degenerative brain disease. The cells grew and "re-populated" the diseased areas. In addition, bone cells produced from the stem cells were successfully used to grow bony tissue in mice, and liver cells were able to secrete urea, which the liver produces from ammonia. The potential to gene...

Newborn brains grow vision and movement regions first

...ain, which control vision and sensory integration, grew significantly faster than the prefrontal region, w...which contains most of the neurons or nerve cells, grew much more robustly than another type of tissue called white matter, which contains the connecting fi...

Misclassified for centuries, medicinal leeches found to be 3 distinct species

...any not. Demand for leeches in 19th-century Europe grew so intense that efforts to protect them led to the some of the earliest legislative efforts at biological conservation. Leeches are still afforded protection by the World Conservation Union (IUCN) and are regulated by the Convention on Internation...

3 proteins may play important role in nerve-cell repair

...reased the amount of the three proteins, the cells grew extensions that were up to three times longer than... normal levels of the proteins, and the extensions grew four to eight times faster than in control cells. "Our findings suggest that these three protein...

Drug-resistant bacterial infections serious complication after corrective eye surgery

...he had developed an infection in his left eye that grew worse, despite treatment, until his vision was only 20/400. When the infection was cultured and found to be MRSA, his antibiotics were changed and his vision recovered to 20/200 over the next two weeks. The patient is awaiting further surgical treatm...

Brown cancer biologists identify major player in cell growth

... signal. From these mice, Rosmarin and his team grew fibroblasts -- common connective tissue cells -- in a Petri dish with nutrient-rich serum and watched them grow. When they detonated their time bomb, GABP was disrupted, and the fibroblasts' ability to divide was dramatically reduced. At the same tim...

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