biohazard sign warning radiation hazard |
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navigate by keyword : alert app area background bacteria beware bio biohazard biologic biological biology black caution chemical contagious contamination danger dangerous death disease environment epidemic forbidden hazard hazardous icon illustration infection infectious isolated lab label medical radiation red research risk science security sign substance symbol threat toxic toxin viral virus warn warning waste weapon yellow zone |
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Biohazard sign. Warning radiation hazard on a red background |
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