Científico de pelo gris serio en bata de laboratorio mirando a la cámara con los brazos cruzados - Foto e imágenes de stock

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

Midsection view of senior bearded doctor standing with hands crossed

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

Portrait of happy scientist looking at bottles with reagents in hands in laboratory

Pensive senior bearded scientist in white coat looking at tube with reagent in chemical laboratory

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

Portrait of focused scientist looking at hand through magnifying glass in laboratory

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

Smiling mature businessman with clipboard behind window on sunny day

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

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

Pensive bearded scientist working with microscope in laboratory

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

Concentrated bearded scientist working with microscope in laboratory