the caution sign `biological hazard” for warning inflected biohazard area, a safety sign warning on biosafety cabinet in lab.

area background banner biohazard biological biology biosafety cabinet caution chemical commercial concept copy coronavirus covid danger dangerous epidemic first hazard hazardous icon important infection inflected inflection instructions lab laboratory management materials medical medicine microbiology microorganism organism pandemic protection red risk room safety science service sign signal space spreading symbol triangle use virus warning white who word work yellow