61.   Now researchers have seen a similar outcome with an experimental vaccine that tries to stop the virus from multiplying.

62.   Now researchers have seen a similar outcome with an experimental vaccine that tries to stimulate immune cells to prevent the virus from multiplying.

63.   Orphans were used as human guinea pigs after World War II to test experimental vaccines for diphtheria and whooping cough, a newspaper reported Tuesday.

64.   Researchers in Trinidad and Tobago said they will begin injecting volunteers with an experimental AIDS vaccine that has caused controversy in Uganda, another test site for the formula.

65.   Several hundred volunteers in the United States were recently injected with experimental vaccine.

66.   The experimental vaccine just passed its first human safety test but has years more testing ahead to prove if it does protect women against cancer.

67.   The experimental vaccine used a bacterium called BCG, for bacillus Calmette-Guerin, that is structurally similar to the tuberculosis germ.

68.   The experimental vaccine uses a different target, one that is virtually identical across strains.

69.   THE first experimental human vaccine has been developed to protect people against the deadly Hong Kong bird flu, it was revealed on Monday.

70.   The next year, Salk announced development of an experimental vaccine.