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Tag: "harvested" at biology news

Threats to wild tigers growing

...o the article. Plans to make use of tiger parts harvested from farmed tigers in China represent an emerging threat, the authors argue. Any trade in tiger parts encourages poaching, because products made from animals farmed at great expense cannot be distinguished from products made from wild tigers. Beca...

Hawaiian treasure, macadamia nuts good for the heart

...st commercials crop of Hawaiian macadamia nuts was harvested in 1956. ...

Scientists discover new, readily available source of stem cells

...ilability. The report describes how the cells were harvested from backup amniotic fluid specimens obtained for amniocentesis, a procedure that examines cells in this fluid for prenatal diagnosis of certain genetic disorders. Similar stem cells were isolated from "afterbirth," the placenta and other membranes t...

Scientists clone mice from adult skin stem cells

...stem cells from the same patient rather than those harvested from an unrelated embryo." Fuchs and her colleagues tested the method in adult stem cells taken from the skin of mice. Using purification methods developed in Fuchs' Laboratory of Mammalian Cell Biology and Development, postdocs Valentina Grec...

New biofuels process promises to meet all US transportation needs

...cesses. In the H2CAR concept, hydrogen would be harvested by splitting water molecules, possibly with a well-known method called electrolysis. Then the hydrogen would be added during the gasification step, making the process more efficient by suppressing the formation of carbon dioxide and converting all of...

US conservation efforts bring more marine turtles to UK

... system. The eggs of Kemp’s ridley turtles were harvested in huge numbers and the species reached near-extinction before protective measures began in the mid-1960s. Previously absent in UK waters since 1974, sightings of this species returned in the 1990s, which coincides with the increasing use of turtle e...

Triple threat: World fin trade may harvest up to 73 million sharks per year

The first real-data study of sharks harvested for their valuable fins estimates as few as 26 million and as many as 73 million sharks are killed each year worldwide--three times higher than was reported originally by the United Nations, according to a paper published as the cover story in the Oc...

Stem cell expansion

... the peripheral blood, and in cord blood, which is harvested from the umbilical cord at birth. Cord blood is increasingly being used for transplantation, but the low number of HSCs present in a unit of cord blood means that transplanted cells can be slow to establish themselves (or engraft) in an adult recipie...

Science captures the essence of fruit

...gh a chemical synthesis process or extraction from harvested raw ingredients. "Neither approach is ideal. Chemical synthesis requires heat and pressure, so is reliant on increasingly expensive and polluting fossil fuels for energy. What's more, chemical synthesis can never truly recreate nature; the flavour ...

Gut microbes' partnership helps body extract energy from food, store it as fat

...and collaborate to increase the amount of calories harvested from a class of carbohydrates found in food sweeteners. In the study, conducted in previously germ-free mice, colonization with two prominent human gut microbes led to fatter mice. Scientists at Washington University School of Medicine in St. Louis...

Bones hold the key to blood renewal

...of stem cells in their bloodstream before they are harvested for transplantation cause the release of many other mature cells as well. Injecting the osteoclast-promoting substance into the mice, on the other hand, resulted in an increase mainly in stem cell release. These findings add a new dimension to our un...

Potential heart benefit found in stem cells

...ks in 17 pigs by way of an angioplasty balloon and harvested stem cells from the animals' subcutaneous fat tissues (ADSC, adipose derived stem cells). After repairing the hearts, a suspension including the ADSC was injected through the balloon into the heart. After eight weeks, the animals were euthanized an...

Findings advance use of adult stem cells for replacement bone

...gineering approaches involve three components: the harvested adult stem cells, growth factors that cause the stem cells to differentiate into the right kind of tissue cells ?like skin or bone ?and a porous scaffold, or template, that allows the tissue to grow into the correct shape. "Finding the right combina...

Researchers release new variety of asparagus

...ariety was not susceptible to disease, it was then harvested for a few additional years. "DePaoli has gone th...es and stems of the plant. Spears are not usually harvested until plants are two years old in order to allow the crown to become large and healthy. During sprin...

Testes to incubate stem cells

...re use. A team in the Netherlands has successfully harvested spermatogonial stem cells from cows and cultured them inside mouse testes. The hope is that the same thing could be done for men. "This is a very promising route to help young cancer patients undergoing chemotherapy," Dirk de Rooij of Utrecht Univers...

Tastier tomatoes in the future?

...r humans. In 2004, 120,000 tonnes of tomatoes were harvested worldwide - and every year this number increases. Numerous medical studies have shown the health value of tomatoes. Lycopen, the pigment that makes tomatoes red, can for example prevent heart disease. Tomatoes furthermore contain a lot of vitamins C ...

Tiny polyps gorge themselves to survive coral bleaching

...t them feed for one hour," Grottoli said. "Then we harvested them all, dissected each polyp and counted how many zooplankton each had eaten, how big they were and what species. That told us how much the coral had eaten." Surprisingly, the researchers discovered that while the bleached Porites fed at its norm...

Sweetgum tree could help lessen shortage of bird flu drug

... shikimic acid extraction, the gumballs need to be harvested when they are still green and before the seeds have been dispersed, Poon says. Each tree can hold hundreds, if not thousands, of seedpods. ...

Primates harvest bee nests in Ugandan reserve

...otropica. Batwa Pygmies, who have traditionally harvested honey for food, located 228 bee nests (both honeybees and stingless bees) for the study. Roubik identified the bees and found that Pygmy names for the bees corresponded to scientific names, except for a black and a brown form of Meliponula ferruginea...

Plants, too, have ways to manage freeloaders

...with one of 10 different strains of bacteria, then harvested the plants after six months to determine their growth. Plants inoculated with some strains grew larger, while other strains produced smaller plants. For the main experiment, Simms concentrated on the yellow bush lupine (Lupinus arboreus), and chose ...

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