In vitro toxicology is one of the most rapidly expanding areas of biological research today. It is generally conceded that this is a result of pressure from the public for safer products and environmental conditions and, in these recessionary times, pressure from company accountants, who often perceive in vitro experimentation as a cheaper option than lawsuits, fines, and expensive remediation. Toxicologists themselves form one group whose vigor and influence on the evolution of in vitro toxicology is often underestimated. Many toxicologists have for some time been unhappy with the quantity...