Immune+System

Draw a concept map showing the relationships between the following terms:
 * Infectious and non-infectious diseases
 * prions
 * viruses
 * bacteria
 * protozoans
 * animals - ectoparasites and endoparasites
 * nutritional diseases
 * inherited (genetic) diseases
 * chemical (metabolic) diseases
 * environmental diseases (eg. drug-related, asbestos related, accidents)
 * ageing
 * cancer