toxicological testing services for determining biological effects of environmental compounds; screening services for determining biological activity of chemical compounds, namely, scientific laboratory services; services of performing cellular response assays for others in the fields of toxicology, pharmacology, biotechnology, and materials science, namely, medical and scientific laboratory services; biotechnological assay services in the fields of pharmaceutical discovery and pharmaceutical development, namely, pharmaceutical research and development; consultative services of designing cellular response research studies in the fields of toxicology and drug development; assessment services of determining toxicity and mode of action of chemical compounds and pharmaceutical drug candidates, namely, technical research and consulting in the field of pharmaceutical studies; contract research services in the fields of toxicology, pharmacology, biotechnology, and materials science; consultative services rendered to others, for selection, study design, execution, data analysis, and interpretation of transcription factor-based assays; services to others of performing assays that enable quantitative assessments of activities of multiple transcription factors and nuclear receptors in various cell systems, namely, scientific laboratory services