Счастливый старший бородатый ученый в белом халате держит трубку с реагентом в химической лаборатории - Стоковое фото и изображение

Portrait of smiling scientist with hands on table looking at camera in laboratory

Senior chemistry professor/doctor in a lab (color toned image)

Senior male researcher carrying out scientific research in a lab (shallow DOF

Senior chemistry professor/doctor in a lab (color toned image)

Portrait of smiling scientist holding bottles with reagents in hands in laboratory

Senior male researcher carrying out scientific research in a lab

Portrait of laboratory technician operating equipment

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

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

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Scientist looking at camera and holding tubes with reagents at laboratory

Laboratory technician holding tubes and looking at camera at laboratory

Pensive scientist in lab coat looking at tube at laboratory

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Portrait of confident scientist putting on protective gloves in laboratory