- Grade / Interest Level 6 - 12
- Reading Level 2.0 - 2.5
- Lexile Level HL150L
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Product Code 9781638891994 ( MR #069807 )
Price $13.95
Cows shake uncontrollably and later die. Sheep scratch at their fur until there are only patches left. People laugh one minute and become violent the next. These are all signs of brain diseases caused by prions. Scientists worldwide are searching for ways to stop these deadly proteins from replicating and spreading throughout the body.
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