81.   What is the inherent longevity of living cells?

82.   When a living cell is isolated and placed in fluid, it will scoot around the dish, propelled by its beating hairs.

83.   When the living cells in the fruits and vegetables are heated by cooking, they die.

84.   When X-rays strike atoms inside living cells, they cause damage, like invisible bullets.

85.   Work at that mesoscale may provide a window for looking into living cells and for developing new materials, computing devices and drugs.

86.   Work by Marian Lewis of the University of Alabama at Huntsville suggests that gravity may also help orient microtubules inside living cells.

87.   A virus is a small infectious organism that needs a living cell in order to reproduce.

88.   Almost all nuts are high in Vitamin E, an antioxidant that neutralizes compounds that damage living cells.

89.   An antiviral agent on which a great deal of attention has been focused in the past is one that is elaborated by living cells themselves.

90.   But he likened it to a coral reef, which also looks inanimate but is full of living cells.