Barbara Mickelson, PhD is a Nutritionist with Harlan Laboratories, in the Research Models and Services Division and provides technical support for Teklad Diets. Harlan Laboratories, 8520 Allison Pointe Blvd, Suite 400, Indianapolis, IN 46250. www.harlan.com; 800.483.5523 ext. 2198; bmickelson@harlan.com.