Dr. Richard Wainford has worked as an assistant professor of pharmacology at Boston University School of Medicine for three years and has published papers with several institutions including the University of Bristol Department of Physiology and Pharmacology. The document advises medical students interested in pharmacology to familiarize themselves with the field's components as the requirements have changed over time. Pharmacology can be described as the study of naturally occurring and synthetic chemicals and their effects on biological systems. The field has developed to incorporate analysis at the molecular level and involves a variety of scientific disciplines including physiology, biochemistry, cell biology and molecular biology. A pharmacologist may specialize in several areas such as clinical and regulatory pharmacology.