<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Study finds sniffer dogs can smell out lung cancer

          Updated: 2011-08-18 17:23

          (Agencies)

            Comments() Print Mail Large Medium  Small 分享按鈕 0

          LONDON - German scientists experimenting with sniffer dogs have found they can accurately detect lung cancer by smelling breath samples.

          In a study carried out by researchers from Schillerhoehe Hospital in Germany, the dogs were able to correctly detect lung tumours in 71 percent of patients, suggesting a similar technique could be used for early detection in future.

          "In the breath of patients with lung cancer, there are likely to be different chemicals to normal breath samples and the dogs' keen sense of smell can detect this difference at an early stage of the disease," said Thorsten Walles, who led the study and published its findings in the European Respiratory Journal on Thursday.

          Lung cancer, mostly linked to smoking, is the second most common form of cancer in men and women across Europe and causes more than 340,000 deaths per year. It is also the most common cause of death from cancer worldwide. ?

          The disease is notoriously hard to detect in its early stages and scientists have been working on using breath tests for possible future screening programmes. The sniffing method relies on identifying so-called volatile organic compounds (VOCs) that are linked to the presence of cancer. ?

          The researchers explained that although many different possible breath test techniques have been tried, they are very difficult develop for use in practice in clinics because patients are not allowed to smoke or eat before the test, sample analysis can take a long time and there is also a high risk of interference. Because of these reasons, no lung cancer-specific VOCs have yet been identified.

          In this study the researchers worked specially-trained dogs and with 220 volunteers, including some lung cancer patients, some patients with chronic obstructive pulmonary disease (COPD) patients and some with no lung health problems. ?

          The results show the dogs successfully identified 71 samples with lung cancer out of a possible 100, and correctly detected 372 samples that did not have lung cancer out of a possible 400.

          The animals were also able to detect lung cancer independently from COPD and tobacco smoke.

          Walles said their results confirm that there is a reliable and stable "marker" for lung cancer in the breath, but there is still a lot of work to do to find out exactly what that is.

          "This is a big step forward...but we still need to precisely identify the compounds observed in the exhaled breath of patients. It is unfortunate that dogs cannot communicate the biochemistry of the scent of cancer."

          Hot Topics

          The European Central Bank (ECB) held a conference call late on Sunday ahead of the market opening, pledging the ECB will step in to buy eurozone bonds with efforts to forestall the euro zone's debt crisis from spreading.

          主站蜘蛛池模板: 青青操国产| 狠狠色丁香久久婷婷综合蜜芽五月 | 国产免费午夜福利片在线| 手机看片AV永久免费| 亚洲av无码专区在线观看成人| 色吊丝二区三区中文字幕| 国产成人美女AV| 国产中文字幕久久黄色片| 国产亚洲精品2021自在线| 成人国产乱对白在线观看 | 亚洲理论电影在线观看| 日韩一区二区在线观看的| 又黄又爽又色的少妇毛片| 欧美高清freexxxx性| 鲁丝一区鲁丝二区鲁丝三区| 精品日本免费一区二区三区| 久久精品国产99国产精品澳门| 女女互揉吃奶揉到高潮视频| 国产成AV人片久青草影院| av天堂久久天堂av| 狠狠躁夜夜躁人人爽天天bl| 午夜福利偷拍国语对白| 国产99在线 | 亚洲| 幻女free性俄罗斯毛片| 国产萌白酱喷水视频在线观看| 国产精品黄色片在线观看| 国产精品久久久久7777| 欧美自慰一级看片免费| 日韩有码中文字幕av| 日韩激情电影一区二区在线| 欧洲亚洲成av人片天堂网| 国产精品人人爽人人做我的可爱| 亚洲午夜精品国产电影在线观看| 成人免费无码视频在线网站 | 亚洲一区二区约美女探花| 国产成人精品亚洲午夜| 亚洲精品一区二区区别| 午夜大尺度福利视频一区| 女人与公狍交酡女免费| 国产99久久亚洲综合精品西瓜tv| 最新国内精品自在自线视频|