worms 2 4

Tag: "worms" at biology news

Small worm yields big clue on muscle receptor action

...scle contraction when acetylcholine was applied to worms lacking any of five receptor subunits known to be sensitive to levamisole, a chemical that poisons nematodes. Two additional receptor subunits -- ACR-16 and ACR-8 -- identified using Vanderbilt's data, were found to be likely candidates for the remai...

Stealth Worms May Improve Insect Pest Control

... nematodes (EPN), the juvenile stage of these tiny worms travels with bacteria in its intestine that specifically kill certain insect species. Nematodes in the family Steinernematidae are associated with Xenorhabdus bacteria; those in the family Heterorhabditidae harbor Photorhabdus bacteria. Both types of...

Signs of aging: Scientists evaluate genes associated with longevity

... were more abundantly expressed in the aging adult worms as compared to the early and mid-life adults. These genes were also differentially expressed between daf-2 mutants and controls, consistent with current theories that protection against cellular stress is associated with increased lifespan. The rese...

Scientists identify genetic pathways essential to RNA interference

...egans into which they added a gene that caused the worms to glow under ultraviolet light but also turned th...very one of the worms' 19,000 genes by feeding the worms bacteria that produce double-stranded RNA for each gene. Inactivation of about 90 genes caused the w...

Scientists identify genetic pathways essential to RNA interference

...egans into which they added a gene that caused the worms to glow under ultraviolet light but also turned th...very one of the worms' 19,000 genes by feeding the worms bacteria that produce double-stranded RNA for each gene. Inactivation of about 90 genes caused the w...

Critical role in programmed cell death identified

...ts have found links in the cell death machinery of worms and mammals, opening new avenues for studying and ...cell death was known, mitochondrial involvement in worms had not previously been shown. The new work, led by Dr. Barbara Conradt, assistant professor of gen...

Yale Scientists Find MicroRNA Regulates Ras Cancer Gene

...atode round worms, C. elegans. He found that these worms require let-7 RNA for normal development to occur. Without it, cells do not stop dividing and fail to differentiate into the normal structures of the worm ?instead they make an excess of their cells. After identifying let-7 as a cell division regula...

The secret lives of whales

...milar to the sulfur loving clams, mussels and tube worms observed around hydrothermal vents. Smith immediat...y that scientists never dreamed of …?Sometimes the worms are so abundant on the whale bones, it looks like a waving lawn of grass. While the first zombie wor...

“Nano-scissors?laser shows precise surgical capability

Precision surgery on microscaled worms ( C. Elegans )is quite a challenge; its about 1 mm...eyknew would impair the worms?backward motion. The worms couldn’t movebackwards after surgery. But within 24 hours, most of the severed axonsregrew and the w...

Research on Worms Yields Clues on Aging

... exposed to drugs used to treat epilepsy inhumans, worms lived longer and retained youthful functions longe...em and life span. The researchers usedthese mutant worms to further pin down the mechanism by which theanticonvulsants increased longevity.The worms' mutated...

1 2 3 4