The first involves sheep. Researchers have found that hair sheep are a good source of blood for use in tests to diagnose infectious diseases in people.

VOA: special.2009.08.03

The Obama administration announced the so-called stress tests in February as part of efforts to rebuild the trust of investors.

VOA: special.2009.04.17

His education law,still in effect, required states to show yearly progress in student learning as measured by the states' own tests.

VOA: special.2010.07.22

But not all tests for life in outer space take place far away, and not all involve the search for liquids.

VOA: special.2010.05.25

As a result, they used the frogs in fast-acting, low-cost pregnancy tests for women during the nineteen-forties and fifties.

VOA: special.2010.06.29

The tests are the first step in human clinical trials of two vaccine candidates developed at the University of Cape Town.

VOA: special.2009.07.29

In two thousand two the group had suggested such screening tests every one to two years for women forty and older.

VOA: special.2009.11.18

He says international tests show that the United States is performing twenty-fifth out of thirty developed countries in science education.

VOA: special.2009.10.15

They said tests in mice showed that their new vaccines are safer than live-virus vaccines and appear to work just as well.

VOA: special.2010.07.12

This process involves several tests before a person can receive a visa to stay in the United States for the training period.

VOA: special.2009.06.02

South Africa launched the tests last week as the International AIDS Society held a conference in Cape Town.

VOA: special.2009.07.29

Researcher Christianne Corbett says more boys than girls score very high on math tests in most countries.

VOA: special.2010.04.01

First reports said he had a heart attack, but later tests showed many drugs in his body.

VOA: special.2010.04.04

Professor Rauschecker says large parts of the visual cortex became active during the sound and touch tests, but only in the blind people.

VOA: special.2010.10.13

The case involved tests that the city of New Haven,Connecticut, gave to firefighters in two thousand three.

VOA: special.2009.07.03