Scientists say an experimental vaccine reduced the risk of infection in humans by thirty-one percent and was safe.

VOA: special.2009.09.30

She says the discovery that chimps can develop AIDS may help researchers understand the disease in humans.

VOA: special.2009.09.08

She believes the chimp virus infection is not quite as damaging as H.I.V.is in humans.

VOA: special.2009.09.08

H.I.V.in humans can cause AIDS, acquired immune deficiency syndrome.

VOA: special.2009.09.08

"There's unequivocal relationship between use of antibiotics in animals and transmission of antibiotic-resistant bacteria causing adverse effects in humans."

VOA: standard.2010.07.21

Hargreaves says the first class of drugs could begin clinical tests in humans within the next six months.

VOA: standard.2010.05.04

In the long term, chemicals wear out the land, kill animals and cause skin irritations in humans.

VOA: standard.2010.04.01

Preliminary phase one tests of this new type of flu vaccine have already started in humans, but in an interview, Nabel said that even if all goes well, it will still be years before a universal flu vaccine is widely available.

VOA: standard.2010.07.21

At the same hearing, he says in one of the best studies used molecular fingerprinting to follow an outbreak of drug-resistant bacteria: "You actually can trace the specific bacteria around and they find that the resistant strains in humans match the resistant strains in the animals."

VOA: standard.2010.07.21

On average, rhesus monkeys live about twenty-seven years in captivity, that is,when they live with humans and not in the wild.

VOA: special.2009.09.01

She suspects that chimps may be a step ahead of humans in how their bodies deal with the virus.

VOA: special.2009.09.08

Borman and Lovell proved that humans could survive in space for the time needed to get to the moon and back.

VOA: special.2009.07.01

"The ambiguity that's in those answers is very,very difficult for humans to understand, never mind a computer to understand.

VOA: special.2011.02.28

Most of these are shared among humans as well as mice, rats and other mammals used for comparison in the study.

VOA: special.2009.05.05