Biohazard Symbol - Official Warning Sign for Biological Hazards #102494 (License: Personal Use)

This iconic black-and-white symbol consists of three interlocking circles surrounding a central circle, forming a symmetrical trefoil shape. Created in 1966 by Charles Baldwin at Dow Chemical, it was intentionally designed to be memorable, non-cultural, and instantly recognizable as a danger sign. It is used worldwide on containers, labs, medical waste, and equipment handling biological hazards such as viruses, bacteria, and recombinant DNA.

This image is commonly used on safety signage, lab manuals, public health advisories, and educational materials about biosafety. It matches user intent for identifying hazard symbols, understanding biosafety protocols, or sourcing official warning graphics for compliance.