No poison allowed Poison ban icon Toxic substance prohibition icon

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• restricted
• test tube
• ban
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• forbidden
• stop
• flask
• prohibition sign
• beaker
• no symbol
• toxic
• attention
• alert
• no sign
• poison
• chemistry lab
• chemical
• chemistry
• experiment
• warning
• chemical lab
• danger
• no
• lab
• laboratory
• danger sign
• biology
• caution
• caution sign
• science
• lab test
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