Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: a rigorously controlled test of a new drug or a new invasive medical device on human subjects; in the United States it is conducted under the direction of the FDA before being made available for general clinical use
Similiar / Same: clinical test
Within this category: phase III clinical trial, phase II clinical trial, phase IV clinical trials, phase I clinical trial
