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Tag: "grow" at biology news

Finding the right mix: A biomaterial blend library

...aterials provide a temporary scaffold for cells to grow and tissue to regenerate. In a 2006 study* presented at the national meeting of the American Chemical Society in September, the researchers analyzed how two types of model cells--immune cells known as macrophages and bone cells known as osteoblasts--...

Parasitic plants sniff out hosts

...ount of food stored in the seed, but they can only grow about four inches before they die. "These plants ...ge of the disk and the dodder plant was allowed to grow and attempt to locate its host. Dodder plants search for hosts by growing and moving in a circular ...

Scientists use gene signatures to match cancer and other diseases with potentially effective drugs

...by which some advanced prostate tumors continue to grow aggressively despite hormone-blocking treatments. A paper in Cancer Cell reports on this work, which made it possible for scientists to connect the action of the two natural products with known biological effects of other drugs. It turned out that ce...

Tamed 11,400 years ago, figs were likely first domesticated crop

... of stem stuck in the ground will sprout roots and grow into a plant. No grafting or seeds are necessary. Bar-Yosef, Kislev, and Hartmann suggest that this ease of planting, along with improved taste resulting from minor mutations, may explain why figs were domesticated some five millennia before other fr...

Hair samples show babies can be exposed to 'crystal meth' while in the womb

...ence of the drug in its hair. Fetal hair starts to grow at about 20 weeks. The authors say that the precise effects of crystal meth on a fetus are not fully known, but the evidence to date points to restricted fetal growth and developmental problems. Crystal meth users were also significantly more...

Unique soybean lines hold promise for producing allergy-free soybeans

...chers have isolated two Chinese soybean lines that grow without the primary protein linked to soy allergies in children and adults. The two lines already are adapted to Illinois-like conditions and will be given away to breeders seeking to produce new varieties of allergy-free soybeans without genetic eng...

Important gene controlling tree growth and development found

...cessation and bud set. The further north the trees grow the more important it is to stop growing and form buds sufficiently early in late summer. This means that trees originating from different latitudes (different origins in the north to south direction, so called "provenances", display different critic...

No-mow grass may be coming to your yard soon

...reshape the steroid pathway to develop plants that grow in specified ways. "We might be able to dwarf grass and keep it green by limiting brassinosteroids or increase the yield of rice by having more brassinosteroids in seeds," Chory said. Another recent study by Makoto Matsuoka's group in Japan, she sa...

Study provides first look at the 'birth' of a retina cell

...t been assigned a function and could theoretically grow to become any kind of cell. Along the way, these cells change their gene expression and acquire competence to become a specific cell type. At a certain point, cell division stops, and the cell is fated to perform a certain function. "We can now vie...

Bioengineered tissue implants regenerate damaged knee cartilage

... demonstrates that engineered cartilage tissue can grow and mature when implanted into patients with a knee injury. The novel tissue engineering approach can lead to cartilage regeneration even in knees affected by osteoarthritis. The tissue engineering method used in this study involved isolating cells...

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

...dopamine D3 receptors might trigger new neurons to grow in humans with the disease. Some of these drugs are commonly used to treat PD. The finding also suggests a way to develop new treatments for PD. The results appear in the July 5, 2006, issue of The Journal of Neuroscience. Parkinson's disease, a ...

Report warns about carbon dioxide threats to marine life

...alcium carbonate that many marine organisms use to grow their skeletons and create coral reef structures. ... more acidic. This means that these organisms will grow more slowly, or their skeletons will become less dense, a process similar to osteoporosis in humans....

Birds going extinct faster due to human activities

... help scientists create laboratory environments to grow specialized cells that can be transplanted into pa...ges the fate of cells it is working with. When you grow the cells in a culture dish you are actually educating them to become something very special." In...

Medium is the message for stem cells in search of identities

... help scientists create laboratory environments to grow specialized cells that can be transplanted into pa...ges the fate of cells it is working with. When you grow the cells in a culture dish you are actually educating them to become something very special." In...

Bone marrow may restore cells lost in vision diseases

... UF researchers believe it may be possible to also grow new cells in the retina to replace cells lost to injury or disease. "In people, retinal pigment epithelium can become damaged with age," said Jeffrey Harris, a graduate student in the department of molecular cell biology in UF's College of Medicine ...

New technology addresses female fertility preservation

...encapsulates follicles and allows immature eggs to grow and mature in vitro. (A follicle is a small spherical group of specialized support cells surrounding each egg.) This novel technology has already led to the live birth of healthy mice from in vitro grown follicles. The results are published online t...

UNH researcher restoring oyster reefs to Great Bay

...ly oyster shells on which young oysters settle and grow ?and seeding it with disease-resistant young oysters. Natural oyster reefs are formed by live oysters atop mounds of empty shells; one initiative of Grizzle's lab is soliciting "recycled" empty shells from oyster harvesters that will eventually be re...

Tigers get a business plan

... have rebounded, the new plan says that tigers can grow to an approximately 1,200 individuals across these...line and holding ourselves accountable that we can grow tiger numbers," said Rabinowitz. "At the same time, we have the knowledge, expertise and track reco...

Leptin found to control appetite and limb development in frogs

...first stages of life, because they need to eat and grow as fast as possible to avoid being prey. For these tadpoles, the leptin signal isn't capable of turning the feeding behavior off, but it does apparently tell their bodies that they've had enough to eat now, and they can begin sprouting limbs. "Lept...

Hope I die before I get old?

...ng emotional resources -- resources that appear to grow with age. People get better at managing life's ups and downs, and the result is that as they age, they become happier -- even though their objective circumstances, such as their health, decline." Lacey adds, "It's not that people overestimate their ...

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