832-394379 - Young lab technician wearing a face mask and pipetting a sample in a laboratory with laboratory equipment at a workflow, Freiburg, Baden-Wuerttemberg, Germany, Europe
832-394378 - Young lab technician wearing a face mask and pipetting a sample in a laboratory with laboratory equipment at a workflow, Freiburg, Baden-Wuerttemberg, Germany, Europe
1176-1225 - A woman wearing a protective hygiene (pollution) face mask on the London Underground subway system, London, England, United Kingdom, Europe
1176-1221 - A woman wearing a protective hygiene (pollution) face mask on the London Underground subway system, London, England, United Kingdom, Europe
805-925 - Women selling thanaka sticks, to be ground into paste to wear on the face as a decorative and protective mask, Sagaing Division, Myanmar (Burma), Asia
832-270486 - During a training session for workers dealing with toxic chemical spills, participants in protective suits walk down the street, Detroit, Michigan, USA