81.   The bacteria are a major cause of hospital-acquired infections.

82.   The bacteria is dangerous for people with weakened immune systems, the very young and the very old, St. John said.

83.   The bacteria is now sprayed on crops as a biological insecticide, but researchers have been figuring out ways to get plants themselves to start producing the proteins.

84.   The bacteria were Clostridridium perfringens, which doctors at Mount Sinai said they had never encountered in a liver donor before.

85.   The bacterium has been a mysterious foe.

86.   The bacterium is not as common in Texas, but Lyme disease is the most common tick-borne disease in the state, Rawlings says.

87.   The bacteria are generally present in air and water, and if the weather at the crash scene is warm enough, they will produce alcohol within hours.

88.   The bacteria are not those that cause the sexually transmitted disease chlamydia, but instead affect the respiratory tract.

89.   The bacteria are surprisingly tough and virulent.

90.   The bacteria are much more difficult to spot when lodged elsewhere in the body, only fully revealing themselves when the infeciton takes root.