Biohazard Sign Video
Upload On Fri Jun 17 2011 by ASL STEM
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Definition
Material of biological origin that is hazardous to humans.
Source: Dictionary.com
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![video 1 thumnail](https://img.youtube.com/vi/9iFjSEpK8ug/0.jpg)
![video 2 thumnail](https://img.youtube.com/vi/tEkgvtaXcjU/0.jpg)
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