Καυκάσιος χαμογελώντας επιστήμονας σε λευκό παλτό εργασίας με μικροσκόπιο και αντιδραστήρια ενώ κοιτάζοντας την κάμερα με συνάδελφο πίσω στο εργαστήριο - Φωτογραφίες & Εικόνες Αρχείου

Caucasian smiling chemist in white coat working with microscope and reagents while in chemical lab

Two happy scientists in white coats working together with microscope in chemical laboratory

Young lab worker. Charming female person keeping smile on her face and looking straight at camera while showing reagent in test tube

Happy chemists in white uniform working with microscope and looking at each other in laboratory

Concentrated caucasian scientists in uniform working with microscope and flasks in chemical laboratory

Professional scientist in protective eyeglasses making experiment with reagents in test tubes

Caucasian chemist in white coat working with microscope and reagents while looking at camera in chemical laboratory

Two scientists in white coats working together with microscope in chemical laboratory

Smiling bearded teacher and serious little student making experiment in lab

Smiling bearded teacher and serious little student making experiment in lab

Smiling bearded teacher looking at little student working with microscope in lab

Bearded teacher holding flask while little student looking in microscope

Smiling bearded teacher looking at little student working with microscope in lab

Teachers and little student in white coats working together in lab

Smiling teachers looking at little student making experiment in chemical lab

Two adult scientists and little student making experiment in chemical lab