Programs that fail these tests could be restricted or blocked from federal student aid.

VOA: special.2010.07.29

In developed countries, microbiologists do these tests with blood from wool sheep or horses.

VOA: special.2009.08.03

These tests,along with mammography for breast cancer, help detect cancers at very early stages and increase chances of survival.

VOA: standard.2010.03.25

Tahir Mahmood from Pakistan asks how to improve his English before taking these kinds of tests.

VOA: special.2009.01.15