81.   The disease produces a spongelike pattern of fluid-filled holes in the deep layers of the brain tissue known as white matter.

82.   The disease, mink spongiform encephalopathy, destroys brain tissue in a manner similar to the way mad cow disease affects cattle.

83.   The discrepancy suggests that the need to get very smart in a hurry stimulates the birth of new brain tissue.

84.   The diseases puncture brain tissue, causing dementia and death in both cattle and humans.

85.   The diseases puncture brain tissue, causing dementia and death, in both cattle and humans.

86.   The fatal disease causes a breakdown of brain tissue into a spongy mass.

87.   The disease in humans, squirrels and cows produces holes in brain tissue.

88.   The further testing calls for sheep brain tissue to be injected into laboratory mice to determine what version of TSE the animals might have carried, he said.

89.   The misfolded prions accumulate into toxic clumps that eventually destroy normal brain tissue.

90.   The light is at a frequency that is not readily absorbed by brain tissue so that the brain is somewhat transparent and lets some of the light through.