While the sham-treated monkeys exuded virus into their blood, urine, brain fluids, saliva, and vaginal secretions, these inoculated animals had no measurable levels of the virus anywhere.
French scientists discovered that tears carry measurable levels of glucose in the 1930s, but it has taken decades to find a way to exploit that to create a non-invasive test.
"Every single one of the women had measurable levels of pesticides and PCB's, without exception," said Dr. Stellman, who is on the epidemiology faculty of the Mailman School of Public Health at Columbia University.
The highway safety agency, which studied records of the 175,000 people killed from 1975 to 2001, found that 37percentt of the dead pedestrians had measurable levels of alcohol in their blood.
And of the 1,985 children who died from 1997 to 2001 as passengers in alcohol-related accidents, 1,349, or 68percentt, were in cars whose drivers had measurable levels of alcohol, government statistics show.
Now we know that we can still find measurable levels of DU among the people of Colonie, we need a much bigger study to establish whether they have suffered disproportionate ill-effects such as cancers as a consequence.
Measurable levels of sucralose have been found in the water supply, raising questions about what happens to various animals when they consume it.
Studies have found measurable levels of nicotine in the apartments of nonsmokers, said John Spengler, a professor of environmental health at the Harvard School of Public Health.
Measurable levels of DFB were quantified in all three ocular tissues.
Only the HP products had consistently measurable levels of 238U, 234U and 230Th.
The scientists also found measurable levels of methanol and ethanol, substances that do not occur naturally in the area.
