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WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified a human lung stem cell that is self-renewing and capable of forming and integrating multiple biological structures of the lung. This research will be published Thursday in the New England Journal of Medicine."This research describes, for the first time, a true human lung stem cell. The discovery of this stem cell has the potential to offer those who suffer from chronic lung diseases a totally novel treatment option by regenerating or repairing damaged areas of the lung," said the study's corresponding author Piero Anversa, who is also director of the Center for Regenerative Medicine at the hospital.Using lung tissue from surgical samples, researchers identified and isolated the human lung stem cell and tested the functionality of the stem cell both in vitro and in vivo. Once the stem cell was isolated, researchers demonstrated in vitro that the cell was capable of dividing both into new stem cells and also into cells that would grow into various types of lung tissue. Next, researchers injected the stem cell into mice with damaged lungs. The injected stem cells differentiated into new bronchioles, alveoli and pulmonary vessel cells which not only formed new lung tissue, but also integrated structurally to the existing lung tissue in the mice.The researchers define this cell as truly "stem" because it fulfills the three categories necessary to fall under stem cell categorization: first, the cell renews itself; second, it forms into many different types of lung cells; and third, it is transmissible, meaning that after a mouse was injected with the stem cells and responded by generating new tissue, researchers were then able to isolate the stem cell in the treated mouse, and use that cell in a new mouse with the same results."These are the critical first steps in developing clinical treatments for those with lung disease for which no therapies exist. Further research is needed, but we are excited about the impact this discovery could have on our ability to regenerate or recreate new lung tissues to replace damaged areas of the lungs," said Joseph Loscalzo, chair of the Department of Medicine at BWH and co-author.

SAN FRANCISCO, April 25 (Xinhua) -- Yahoo Inc. on Monday announced that it has acquired IntoNow, a startup company whose technology can let users almost instantly recognize TV content and share favorite programs with their friends.IntoNow has built a technology platform that can automatically identify live television content and any previously aired U.S.- based television programming in the past five years.It also offers an application for iPhone and other devices running Apple's iOS operating system, which can help users connect and engage with their friends around the shows they love.With the application, users can find out what their friends are watching and engage in discussion through their favorite social networks, or discover what shows they have in common with others and which of them are on air right now."Relying on social channels as a means for discovering content - - whether it's on a PC, mobile device, or TV -- is rapidly on the rise," Bill Shaughnessy, Yahoo's senior vice president of product management and product marketing, said in a statement."IntoNow's technology combines the ability to check-in to what a consumer is watching, engage in conversations, and find related content," he added.In a post on its company blog, Yahoo noted that the addition of IntoNow will enhance its video programming, and bolster its social engagement across the Yahoo network and on all screens.IntoNow, headquartered in Palo Alto in the U.S. state of California, was only launched in January 2011 and now has seven employees.Yahoo didn't disclose terms of the purchase. Technology blog TechCrunch reported that Yahoo paid between 20 million to 30 million U.S. dollars, citing sources with knowledge of the deal.

WASHINGTON, Jan. 20 (Xinhua) -- Officials from China and the United States on Thursday signed a new agreement to support panda breeding, research and conservation efforts by the two countries, an exciting news for numerous American fans of the cute animals.Zang Chunlin, Secretary General of the China Wildlife Conservation Association, and Dennis Kelly, Director of the U.S. Smithsonian's National Zoo, signed the Giant Panda Cooperative Research and Breeding Agreement.Under the agreement, a pair of giant pandas, Mei Xiang and Tian Tian, will remain at the National Zoo in Washington D.C. for five more years.Also in attendance at the signing ceremony at the National Zoo was Chen Naiqing, wife of China's Ambassador to the U.S. Zhang Yesui, U.S. Secretary of the Interior Ken Salazar and Mary Kaye Huntsman, wife of U.S. Ambassador to China Jon Huntsman.On behalf of the Chinese embassy and Ambassador Zhang, Chen expressed appreciation to the National Zoo for taking care of these giant pandas and to all American people for their love for them."Although the weather is cold today, the friendship between our people keeps us warm," she said. "I am confident that through joint efforts, our cooperation will grow, our friendship will deepen, and the future will be even brighter."The first two years of the new agreement, effective immediately through Dec. 5, 2015, include a cooperative study involving reproductive experts from the China Conservation and Research Center for the Giant Panda in Wolong and the Smithsonian's Conservation Biology Institute to oversee the breeding of Mei Xiang and Tian Tian."I am proud that this agreement not only ensures that visitors to the zoo will continue to be able to visit and learn about these beautiful animals, but also provides a strong platform for improving the conservation of wild pandas and their habitat in China," said Salazar.He said those giant pandas have "long symbolized the close partnership the United States has with China as we work together to conserve and recover one of the world's most endangered species in the wild."Mei Xiang and Tian Tian have lived at the Smithsonian's National Zoo since Dec. 6, 2000. Both pandas were born in Wolong, China and had parents that were wild born. Mei Xiang, which means "beautiful fragrance," will turn 13 on July 22 and Tian Tian, meaning "more and more," will turn 14 on Aug. 27.The current pair has not produced a cub since 2005, when Tai Shan, a male, was born. Tai Shan went back to China in February, 2010.

BEIJING, Feb. 10 (Xinhua) -- China's drought control authorities announced Thursday that hours of snowfall and irrigation have eased to some extent the severe drought in parts of the nation.Rapid spreading of the dry spell in the country's winter wheat producing regions has been curbed by wide-spread snowfall in the areas along the Yangtze, Huaihe and Yellow rivers and in the country's northern part on Wednesday and Thursday, the Office of State Flood Control and Drought Relief Headquarters said in a statement on its website.Drought-hit areas in Henan and Anhui, which are two major wheat-producing provinces, were reduced by 6.3 million mu (420,000 hectares) and 4.1 million mu, respectively, from Wednesday, the statement said. The agency added that irrigation also contributed to easing the effects of the drought.The statement said that as of Thursday, eight drought-hit provinces had irrigated 143 million mu of drought-affected wheat producing areas, which accounts for 52 percent of the combined winter wheat producing areas in the provinces. The eight provinces include the territories of Shandong, Henan, Hubei, Anhui, Shanxi, Shaanxi, Gansu and Jiangsu.As of 3 p.m. Thursday, the drought had affected 101.28 million mu of crops nationwide and left 2.81 million people and 2.57 million heads of livestock short of drinking water, said the statement.Cloud seeding on Wednesday and Thursday during a recent cold front, also helped alleviate drought in some regions, according to a report posted on the website of the China Meteorological Administration on Thursday.The report also said that the artificial precipitation had mitigated the shortage of moisture in the soil in parts of Henan and Anhui. The situation is expected to improve as the rain and snow continues.However, experts urged more measures from local governments to ensure winter wheat production since the current precipitation is not adequate to "completely ease the drought", the report said.