Toxicological Center Expands Ownership by Eric Monson Posted 12/2/2013 12:00 am The owners of the Center for Toxicology & Environmental Health in North Little Rock recently announced that they have signed an agreement to expand the number of principals at the company. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 15 days. Purchase Now Already have archive access? Login to view this article.