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Urine cotinine concentrations average four to six times higher than those in blood or saliva, making urine a more sensitive matrix to detect low-concentration exposure
"Safety of students is the most important thing we deal with." Karen says that safety could be better monitored
At this point, we also connected the rear cameras high-speed coaxial cable to the front camera, since we ended up routing them together to the rear of the vehicle
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But people who are picked up by screening and are treated, and who then do not manifest disease, see strong personal evidence that the screening has worked
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