"We were looking at effect of delivery mode on the very first bacteria that the baby is exposed to."

VOA: standard.2010.06.30

"There is something about that stretch that made me feel so much more vulnerable and susceptible and exposed to the natural conditions.

VOA: special.2011.03.23

In their study, the researchers tested blood for cotinine,a chemical which is produced when nicotine is metabolized, so they got an objective measure of how much smoke the teenagers were exposed to.

VOA: standard.2010.03.04

"My brother and I were talking about how - normally you do not just walk up to a temple or a synagogue and say, 'hey,can I come in and take a look?' So this is a great opportunity and exposes me to a lot of things that I would not otherwise have been exposed to,"

VOA: standard.2009.10.19