Figure 1From: Semantic annotation of biological concepts interplaying microbial cellular responsesThe hierarchical structure of the biological concepts. The hierarchy covers biological concepts that characterize the organizational structure of microbial systems, the physiological conditions that affect them and the laboratory techniques used to identify their underlying properties. Note: The supercategory genetic information carrier is used only for organisational purposes, i.e. the category is never used as an annotation category.Back to article page