Danger sign. Set of vector icons. Hazard and warning symbols: radiation ionization, biohazard caution and danger zone. Collection of universal recognisable signs: bones with skull, radioactivity. Shutterstock .eps vector - Danger sign. Set of vector icons. Hazard and warning symbols: radiation ionization, biohazard caution and danger zone. Collection of universal recognisable signs: bones with skull, radioactivity. - ID: 1414037234