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Mark Harris is a seasoned toxicologist and current Managing Principal at ToxStrategies LLC, a position held since May 2008. Prior experience includes serving as a Toxicologist at chemrisk from 2005 to 2008, and as a Senior Managing Scientist at Exponent between 2003 and 2005. Mark's career in the field began at Maxus Energy Corporation as a Toxicologist from 1991 to 1999, and earlier as a Toxicologist at McLaren Hart for a year in 1990. Mark Harris earned a Ph.D. in Toxicology from Texas A&M University, where a BS in Biochemistry was also achieved, and holds a Master's degree in Business from the SMU Cox School of Business.