NEAL GRUNDY / SCIENCE PHOTO LIBRARY NEAL GRUNDY / SCIENCE PHOTO LIBRARY
Biological hazard. Conceptual image of a gas mask and biological hazard symbols. This may represent the precautions taken to avoid being contaminated by biological warfare agents such as pathogenic bacteria and viruses. Other biological hazards include other dangerous microbes such as some fungi and protozoa, medical waste, and some genetically modified organisms (GMOs).
Model release not required. Property release not required.