61.   The anthrax vaccine has long been plagued by questions about its safety, with some soldiers who had been inoculated complaining of a variety of illnesses.

62.   The anthrax vaccine has only been used as a preventive measure, never to treat people after possible exposure.

63.   The break-in protein is called protective antigen, a misleading name conferred before its exact role was understood and because it is the protein attacked by the anthrax vaccine.

64.   The Defense Department has paid for the production of an anthrax vaccine for soldiers for years, but that program has been plagued by problems.

65.   The Defense Department has conducted on-going studies of the effectiveness of the anthrax vaccine in animals.

66.   The episode enabled science to show that the anthrax vaccine worked.

67.   The epidemic, in which nine people became ill and four died, broke new scientific ground because it proved the efficacy of the anthrax vaccine.

68.   The inability of that company, Lansing-based BioPort Corp., to promptly deliver an anthrax vaccine as bioterrorist attacks arose perfectly illustrates that concern.

69.   The San Antonio scientists say an oral anthrax vaccine could confer immunity in one dose, without the problems associated with the injectable vaccine.

70.   The prospect of giving the anthrax vaccine to thousands of people is also clouded by past problems with the vaccine.