The Association of the British Pharmaceutical Industry (ABPI) has assembled a good deal of accessible information on the nature and importance of pathogens on this educational site. Readers may like to begin by scouting the four main types of microorganisms: bacteria, fungi, viruses, and protozoa. For instance, the bacteria section explains the structure of bacteria, outlines the different types of bacteria, and offers that "80 million bacteria could easily lie down on one side of a pound coin." Readers will also find much to appreciate in the Parasites section, as well as the sections on How pathogens are spread, How pathogens cause disease, and Growth of pathogen populations. Each section features key terms and their definitions, animations that will help facilitate instruction, and easily downloadable diagrams. The site also boasts a ten question quiz where readers can test their knowledge of microorganisms.