Symbol 2491 from ISO 7000 - Title/Meaning: Protection against micro-organism hazards 
Function/description: To indicate that the clothing or material provides protection against biological hazards (micro-organisms).
Own work using: iso.org/obp/graphics/grs/a84900be-f3aa-432d-9749-608df23b0e36 200.png
Vectorization:  Mrmw