Usmívající se šedé vlasy vědec v laboratorní plášť s rukama zkříženýma při pohledu na fotoaparát - Stock fotografie a obrázky

Serious grey haired scientist in lab coat looking at camera with arms crossed

Midsection view of senior bearded doctor standing with hands crossed

Portrait of tired senior scientist sitting at workplace and looking at camera

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

Bearded senior male doctor in eyeglasses smiling and looking away on white

Emotional Handsome gray haired senior man vaccinated with a syringe in hand. Immunization and health care concept

Smiling mature businessman with clipboard behind window on sunny day

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

Scientist looking at camera and holding tubes with reagents at laboratory

Concentrated bearded scientist working with microscope in laboratory

Confident scientist in lab coat looking at camera with arms crossed

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

Laboratory technician holding tubes and looking at camera at laboratory

Portrait of excited scientist working with reagent in flask in laboratory