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Tag: "transformed" at biology news

Theory of oscillations may explain biological mysteries

...akly competing consumers of a food resource can be transformed by the arrival of a third competitor to provide unpredictable opportunities for the newcomer to invade. Vandermeer holds out hopes that the study of oscillations in biological populations will lead to insights into complex systems, such as those that...

Key to zebrafish heart regeneration uncovered

... which are immature cells with the potential to be transformed into other cell types. This mass of undifferentiated cells is known as a blastema. As the progenitor cells receive the correct biochemical cue, they turn into distinct cell types, such as bone, muscle and cartilage, to form the new limb. Poss beli...

Gene key to taste bud development identified

...ese animals, the stem cells in the tongue were not transformed into taste buds, she said. Instead, the cells became the "scaly" cells that cover the surface the tongue and help to direct food to the back of the mouth. The new findings could lead to a better understanding of developmental disorders of the gut c...

New culture method for hepatitis C virus uses primary hepatocytes and patient serum

...cytes, instead of culture-adapted virus strains in transformed cell lines. The related report by Lázaro et al, "...issive virus isolates for efficient replication in transformed (mutated) cell lines. Still lacking has been a system to sustain replication of novel virus isolates...

Freeze! Scientists film proteins at work by freezing them at different states

... humans, about 2% of the oxygen used to breathe is transformed into this toxic “superoxide radical?molecule, instead of water. This production is increased in people affected by neurodegenerative diseases such as Alzheimer. A high amount of these molecules worsen these illnesses, so scientists are looking for dr...

Researchers create artificial enzyme that mimics the body's internal engine

...r of the electrons is a molecule of oxygen that is transformed into water and, in the process, generates energy i...d a nonstop supply of electrons to the model as it transformed oxygen molecules into water-a process called steady turnover. "The biochemists that study the enz...

Finnish scientists discovered a new approach to treat virus-induced lymphomas

... not induce apoptosis in lymphoblastoid cell lines transformed with another human tumor virus, the Epstein-Barr virus, despite of their wt p53 status. Moreover, the researchers show that Nutlin-3a has striking anti-tumor activity in vivo in a mouse xenograft model for the PEL. Nutlin-3a treatment resulted in...

Darwin's famous finches and Venter's marine microbes

...pedition, named after the sailboat J. Craig Venter transformed into a marine research vessel, was inspired in part by the journeys of the HMS Beagle and the HMS Challenger in the nineteenth century. But unlike those pioneering expeditions, the Sorcerer II team led by J. Craig Venter and a globe-spanning network ...

Paper challenges 1491 Amazonian population theories

...nto the argument that you had big populations that transformed the landscape en masse. Another group of archaeolo...r in the other, that much of Amazonia has not been transformed by human actions, and ideally should be kept that way, to preserve species biodiversity. "The way...

Researchers develop way to calculate speed of bacterial sex

...st as the bite from a vampire leads a victim to be transformed into a vampire, the donor bacteria’s "bite" injects genetic material into the recipient, causing the recipient to become a donor. The controlling rates of conjugative gene transfer and the kinetics of conjugative gene transfer are unknown. The stu...

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