Guidance on Biological Safety. Biological agents Guidance on BA risk assessments and controls required to protect humans and the environment. Pathogen and toxin registration (RETAIN) Guidance on pathogen and toxin registration requirements and the RETAIN online registration system. Genetically modified organisms Guidance on GM risk assessments and controls required to protect humans and the environment. Containment and controls Guidance on containment and control of biological hazards in laboratories and fieldwork. Biological security Guidance on biological security controls required for work with scheduled pathogens and toxins. Transport of biological materials Guidance on requirements for national and international transport of biological materials. This article was published on 2024-07-22