21.   Still, the health institutes give these pills only limited support.

22.   The cause was cancer, the health institutes said.

23.   The health institutes, for example, have renewed a grant for breeding at the Coulston Foundation.

24.   The health institutes, where the scientists conducted some of the experiments, said the investigators could not have foreseen the toxic effects and were blameless in the deaths.

25.   The health institutes are conducting larger studies to determine how many HIV-infected people will develop osteonecrosis and how many will need surgery for a total hip replacement.

26.   The studies were paid for by the National Eye Institute, a branch of the health institutes.

27.   Within the administration, Vice President Al Gore has been a strong supporter of high-technology projects at the health institutes.

28.   An explosion rocked a health institute Sunday night in the northern town of Shkodra.

29.   But the product in question was the cigarette, and the health institute that dreamed up the ad said it was a big success.

30.   The health institute did not identify the woman and provided no further details.