signage for pathogen alerts PNG, stickers, cliparts, transparent illustration & graphics

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biological hazard warning sign, yellow triangle safety label, biohazard symbol, contamination hazard signage, health risk alert, infectious material warning, pathogen danger indicator
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biological hazard warning sign, triangle biohazard symbol, 危险符号生物安全等级, 黄色危险品标志, caution infectious agent symbol, restricted biohazard zone, signage for pathogen alerts
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biological hazard warning, yellow triangle danger, biohazard symbol signage, laboratory safety sign, caution biosafety area, pathogen contamination sign, medical waste alert icon