( clinical trials)
When a new type of drug or medical treatment undergoes clinical trials , it is tested directly on patients to see if it is effective.
Two rival laser surgery systems are undergoing clinical trials in the US.
N-COUNT
( clinical trials)
When a new type of drug or medical treatment undergoes clinical trials , it is tested directly on patients to see if it is effective.
Two rival laser surgery systems are undergoing clinical trials in the US.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006