Boy wearing face mask and protective glasses using microscope in 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
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
Boy wearing face mask and protective glasses using pipette and beakers in laboratory
Boy and Girl wearing face mask and protective glasses at laboratory
Girl wearing face mask and protective glasses using pipette and test tubes in laboratory
Tilt down shot of female Asian scientist wearing protective face mask and safely glasses using microscope and writing down notes while working in laboratory
Girl wearing face mask and protective glasses holding container with chemical at laboratory
Female scientist in protective face mask, glasses and gloves using microscope while doing vaccine research in laboratory
Girl wearing face mask and protective glasses holding test tubes with chemical at laboratory