Researchers from the University California.

Blood-based TB test matches up to old skin test in study among health care workers in Indiaof In a head-to-head matchup between a new blood-based tuberculosis test and the traditional tuberculin skin test, researchers from the University California, Berkeley, and the Mahatma Gandhi Institute of Medical Sciences in India found that the two methods for detection of latent TB infection are equally good.

However, many physicians consider the skin test crude, said Pai, because they do not clearly differentiate between people who have received a vaccine against TB ones that distinguish a true infection. Moreover requires the patient skin test skin test three days after the prick health care health care worker can be measured, the resulting bump on the skin.The results of research show that methylation of the process occurs among the rocks and gravel at the bottom from rivers and in the sandy landscape is based conifer forests in the Upper Peninsula. However, these results are not specific only Lake Superior and the Upper Peninsula: they confirm the importance of groundwater as a source of methylmercury for river basin around the Great Lakes.

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