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Tag: "mature" at biology news

The secret love life of plants

...mbryos and endosperm. They develop together into mature seeds. The exact process, and the communication between the two parts of the seeds, has been unclear to scientists. Researchers at the Max Planck Institute for Plant Breeding Research and the University of Cologne have, however, isolated a mutant whe...

Embryos tell story of Earth's earliest animals

...ryos," the scientists write, since fossils of more mature animal forms are likely to be limited, maybe non-existent. Much mystery surrounds the sudden appearance of animals in the fossil record, between 500 and 600 million years ago. Within a few million years, the fossil record goes from zero evidence of...

Living taste cells produced outside the body

...l Chemical Senses Center have succeeded in growing mature taste receptor cells outside the body and for the ...tilized a novel approach. Instead of starting with mature taste cells, they obtained basal cells from rat taste buds and placed these cells in a tissue cultur...

Liver cancer linked to cellular repair pathway

...the Hedgehog pathway kills cancer cells but leaves mature healthy liver cells intact, the researchers report...vated Hedgehog pathway in liver cancer, but not in mature liver cells, also opens the door for development of new diagnostic tests for the disease, Sicklick s...

Sweetgum tree could help lessen shortage of bird flu drug

...t is most abundant in the fruit, Poon says. In the mature tree, the fruit emerges as a green seedpod that later dries into a brown, spiny husk, which releases an abundance of tiny, grain-like seeds. To optimize shikimic acid extraction, the gumballs need to be harvested when they are still green and before ...

Invasive species harms native hardwoods by killing soil fungus

... suggests garlic mustard invades the understory of mature forests by poisoning the allies of its main competitors," Stinson says. "By killing off native soil fungi, the appearance of this weed in an intact forest could stifle the next generation of dominant canopy trees. It could also invite other native an...

GlycoFi announces the first production of antibodies with human glycosylation in yeast

...ity, half-life, or tissue distribution). Given the mature and well-established nature of yeast-based protein production technology, the reported work also promises to improve the production and scale-up economics of antibody manufacturing. Monoclonal antibodies constitute the majority of therapeutic protei...

A surprising pair of proteins help make healthy eggs

...and hormones. Without granulosa cells, eggs cannot mature and be successfully fertilized. How do these handmaidens grow? Biologists at Brown University and the University of California–Berkeley have discovered that two proteins ?TAF4b and c-Jun ?team up to turn on about two dozen genes inside the nuclei of...

Powerful technique for multiplying adult stem cells may aid therapies

...ess with which adult stem cells differentiate into mature tissue the moment they're isolated from the body. This makes it nearly impossible for researchers to multiply them in the laboratory. And because adult stem cells are so rare, that makes it difficult to use them for treating disease. Now, researche...

Stem cell study for patients with heart attack damage seeks to regenerate heart muscle

...bone marrow and have the potential to develop into mature heart cells and new blood vessels. The MSC cells a...e designed by nature to perform tissue repair in a mature adult. It is believed that these cells can be used in patients unrelated to the donor, without rejec...

Botox could help target resistant tumors for treatment

...y, and lack smooth muscle layers, but one can find mature blood vessels, with smooth muscle layers that respond to toxins like Botulinun, inside tumors. Several laboratories, including ours, are working on new strategies to alleviate tumor hypoxia, which sensitizes the tumor to treatment. Botox appears to o...

Front-line immune cells mature in four stages, study shows

...front-line defenses against cancer and infections, mature from progenitor stem cells in four discrete stages...ace can give rise to NK cells. They also knew that mature NK cells lack CD34. But how and where the CD34-bearing cells became mature NK cells was not understo...

Single microRNA causes cancer in transgenic mouse

...n evolve through several stages before they become mature enough to create antibodies. Antibodies are proteins that sit on the surface of B cells or that are secreted by B cells that can detect the presence of foreign invaders like bacteria, viruses or parasites. Lab tests revealed that the B cells in enl...

Scientists discover a genetic switch that links animal growth and cancer

...ter will it sprout and initiate development into a mature tree. Many animals similarly halt their developmen... defective, the animals attempt to grow and become mature even when they have no food. "The attempt of these animals to grow when they should not is not only...

Potential heart benefit found in stem cells

...Scientific Session, scientists continue to explore mature stem cell sources for potentially significant cardiovascular benefits. ACC.06 is the premier cardiovascular medical meeting, bringing together over 30,000 cardiologists to further breakthroughs in cardiovascular medicine. "We hope that the explorat...

Component in soy products causes reproductive problems in laboratory mice

...d they can't get the support they need to become a mature functioning egg cell." "You need at least one good healthy single oocyte that is ovulated and fertilized by a sperm to get a healthy baby. Genistein seems to have a way of making this task very difficult," said Newbold. "I don't think we can dismi...

Exotic crab poised for widespread UK invasion

...Prescott during a photocall on the Thames. the mature crab is the size of a dinner plate when its legs are extended (the body is around 8cm wide and the legs about 12cm long) The scientific name is Eriocheir sinensis (from the Greek meaning wool hand of the Chinese) and the crab originated in the P...

How sperm crack the whip

...n sperm before ejaculation, but is usually lost in mature sperm. Patch clamp studies on spermatozoa with remnant cytoplasmic droplets revealed that CatSper1 was a major component of the calcium ion channel responsible for alkaline-activated hyperactivation and male fertility. According to Clapham, the f...

Worm hormone discovery may aid fight against parasitic disease

...tually in an immature state, or by coaxing them to mature before a food source is available. Other UT Southwestern authors on the paper are lead author Daniel L. Motola, an M.D./Ph.D. student in the Medical Scientist Training Program; Dr. Carolyn Cummins, a research fellow in pharmacology and an HHMI resea...

Stem cell transplants improve recovery in animal models for stroke, cerebral palsy

...icer. In addition, MultiStem TM cells can safely mature into a broad range of cell types and can be produc...r. Van Bokkelen. In extensive animal testing, the mature stem cells have been shown to be safe, and do not form tumors or other abnormal tissue, a potential ...

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