The National Institute of Environmental health Sciences has signed on for an additional $8.4 million in services from Paradigm Genetics.

The NIEHS exercised an option that adds money to the original five-year $23.8 million deal it already had with Paradigm.

Paradigm will provide toxicogenomics studies with data to be included in the National Toxicology Database that was developed to better understand the effects of short- and long-term exposure to chemicals.