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WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to a study published Thursday in the online edition of journal Cell,A Kyoto University team coaxed mouse embryonic stem cells into sperm precursors, called primordial germ cells (PGCs), and shown that these cells can give rise to healthy sperm. The researchers say that such in vitro reconstitution of germ cell development represents one of the most fundamental challenges in biology.When transplanted into mice that were unable to produce sperm normally, the stem cell derived PGCs produced normal-looking sperm, which were then used to successfully fertilize eggs. These fertilized eggs, when transplanted into a recipient mother, produced healthy offspring that grew into fertile male and female adult mice. The same procedure could produce fertile offspring from induced pluripotent stem cells that are often derived from adult skin cells."Continued investigations aimed at in vitro reconstitution of germ cell development, including the induction of female primordial germ cell-like cells and their descendants, will be crucial for a more comprehensive understanding of germ cell biology in general, as well as for the advancement of reproductive technology and medicine," the researchers wrote.

WELLINGTON, Sept. 27 (Xinhua) -- New Zealand and Japanese scientists are teaming up to develop healthier foods under two government-funded "functional foods" projects.One project, to be led by New Zealand's Massey University, will work with New Zealand food companies to create and develop a functional food with specific health enhancing effects for menopausal women, New Zealand Science and Innovation Minister Wayne Mapp announced Tuesday.The other project, to be led in New Zealand by Plant and Food Research, would use mass spectrometry to develop a "metabolic atlas" of the chemical composition of allium vegetables, such as onions and garlic, which the horticultural industry could use to develop new food products with health benefits.Mapp said the two research projects would be awarded a total of 1 million NZ dollars (782,000 U.S. dollars) in funding to strengthen collaborative research relationships between New Zealand and Japan, Mapp said."These research projects have strong commercial potential, including through the Japanese market, and so have the potential to benefit our economy," said Mapp."The government is committed to building and strengthening research relationships with other countries that will achieve world-class scientific results and lead to new innovative technologies."The two projects awarded funding under Ministry of Science and Innovation's Japan Science and Technology Agency (JST) funding round focus on functional foods. The ministry and Japan each fund half the cost of each research project awarded funding.

NEW YORK, July 15 (Xinhua) -- A Gallup survey released on Friday found a total of 59 percent of Americans support a ban on smoking in all public places.The July 7-10 survey among 1,016 national adults showed a change in the public's attitude toward public smoking ban. In 2001, when Gallup first asked about a ban on public smoking, 39 percent were in favor, an attitude that stayed roughly the same through 2007.At the same time, the poll also found that fewer than two in 10 people supported the idea of making smoking totally illegal.According to the American Lung Association, 27 states plus the District of Columbia have passed comprehensive smoke-free laws. A New York City law bans smoking in virtually all public places, including outdoor plazas and beaches.

MOSCOW, Sept. 16 (Xinhua) -- A Russian Soyuz space capsule carrying three astronauts returned to the Earth Friday, the Mission Control Center outside Moscow confirmed.The three astronauts, two Russians and one American from the International Space Station (ISS), who were flown back by a Soyuz TMA-21 spacecraft, were in good condition, search and rescue teams on the ground in Kazakhstan said.Russian TV images showed the three ISS crew members being taken out of the space capsule and seated in armchairs with blankets to re-adapt to the Earth's gravity.According to the Cosmonaut Training Center, the astronauts underwent physical examinations immediately after the landing, which included examinations of hearts, lungs and adrenal glands.Seventeen helicopters and planes had waited for the capsule's landing.Helicopters will carry the astronauts from the landing site to the Kazakh city of Karaganda, from where the two Russian cosmonauts Alexander Samokutyayev and Andrei Borisenko will fly back to Moscow later Friday, while NASA astronaut Ronald Garan will leave directly for the United States for post-mission rehabilitation, the Itar-Tass news agency reported.The return of the three crew members was originally scheduled for Sept. 8, but was postponed by a failed launch of the Progress cargo ship on Aug. 24.The three crew members remaining on board the ISS are scheduled to return in mid-November.

BERLIN, June 6 (Xinhua) -- The German authorities said on Monday that Germany's first sample tests of the allegedly contaminated bean sprouts have found no E. coli strains that have sickened more than 2,000 people in Europe.According to a statement issued by the Agriculture Ministry of the Lower-Saxony state, 23 of 40 samples concerning the suspected sprouts from a market garden in the state have tested negative, and further tests are still pending."Based on the initial findings in tests of some of the samples, especially the seeds, we assume that intensive analytical efforts are needed to prove that the suspected pathogen is really there," the statement said.Beansprouts and salad sprouts are seen in this picture illustration taken in Berlin June 6, 2011.  The German authorities said on Monday that Germany's first sample tests of the allegedly contaminated bean sprouts have found no E. coli strains that have sickened more than 2,000 people in EuropeLower-Saxony's Agriculture Minister Gert Lindemann said Sunday that a market garden in the rural district of Uelzen had provided a connection "involving all the main outbreaks" of the disease.Restaurants and food outlets of almost all E. coli-affected areas had received shipments of sprouts directly or indirectly from the company, state officials said.The German authorities have been racing to track down the source of the pathogen since the outbreak, which has infected people in 12 countries, all of whom had once traveled in northern Germany.More than 600 of those infected have developed Hemolytic Uremic Syndrome, a potentially deadly complication attacking the kidneys.The E. coli source was first thought to be cucumbers from Spain, which has caused huge loses for Spain farmers. However, this conclusion was overthrown by laboratory tests in Hamburg later.