Keywords
60-64 years, caucasian ethnicity, close-up, day, development, differential focus, glasses, grey hair, head and shoulders, horizontal, indoors, innovation, laboratory, looking at camera, men, microscope, new jersey, one person, one senior man only, part of, professional, research, science, short hair, skill, usa, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u47201054