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

At the same time he heard, or imagined he heard,a light, soft step and then another.

VOA: special.2009.10.31

Doctor Anthony Fauci at N.I.H.called the findings an important step forward.

VOA: special.2009.09.30

The boy was unsteady at his first step.

VOA: special.2010.05.15

And the program includes a microfinance grant, money that she has actually made by selling us beads that she gets at one time, so that she can make a big enough step into a business that is going to be sustainable."

VOA: special.2010.06.28

To get at these non-mutating parts of the virus, Nabel and his colleagues used a two-step vaccination process, called "prime-boost."

VOA: standard.2010.07.21

The pact is a modest but important step forward, according to Kingston Reif, at the Washington-based Center For Arms Control and Non-Proliferation.

VOA: standard.2010.04.04

"When we look at counterinsurgency the first and critical step is to separate the enemy from the people,"

VOA: standard.2009.12.08

He said Americans now facing grave problems need to work together, tap their inner resolve, and seek progress one step at a time.

VOA: standard.2010.01.17

"And that impacts political relations at some point. Accepting Turkish leadership is just one step too far."

VOA: standard.2010.07.26

this is a NATO mission as well." "And we are working actively and diligently to consult with NATO at every step of the way."

VOA: standard.2009.09.29

The Thai government said it will step up security at the summit later this month.

VOA: standard.2009.10.09

One observer,Akiva Eldar, a senior columnist at the Haaretz newspaper in Tel Aviv, sees no movement unless one of the sides takes the first step.

VOA: standard.2009.11.16

Protesters at the September rally were calling on Captain Camara to step down.

VOA: standard.2009.10.16