31.   International radio stations found their signals blocked Wednesday.

32.   International radio stations found their signals blocked.

33.   Just is directing a study in which some patients will be injected with a drug to stop muscle spasms by blocking nerve signals.

34.   Many countries, including the United States, have blanket bans against anything that would block cell phone signals.

35.   Reports from the area were limited, for Serbs blocked signals from Muslim shortwave radio operators there, Bosnian officials said.

36.   Researchers said the finding may help develop drugs that will block the signal that causes the c-MYC gene to turn on.

37.   The new drug stops the growth of human leukemia cells by blocking signals that cause cancer cells to reproduce.