Boy wearing face mask and protective glasses using pipette and beakers in laboratory
Girl wearing face mask and protective glasses holding test tubes with chemical at laboratory
Boy wearing face mask and protective glasses using microscope in laboratory
Female teacher wearing face mask and protective glasses using microscope in laboratory
Boy and Girl wearing face mask and protective glasses at laboratory
Female teacher wearing face mask and protective glasses teaching students in laboratory
Female teacher wearing face mask and protective glasses teaching students in laboratory
Girl wearing face mask and protective glasses holding container with chemical at laboratory
Female teacher wearing face mask and protective glasses teaching students in laboratory
Female teacher wearing face mask and protective glasses holding a vial bottle in laboratory
Female teacher wearing face mask holding test tube at laboratory at school
PCR test in laboratory, doctor holding COVID-19 Coronavirus swab collection kit, wearing PPE protective suit mask gloves, test tube for taking OP NP patient specimen sample