Keywords
60-65, 60-65 years, adult, caucasian, caucasian ethnicity, clean, clean suit, coat, concentrate, concentrating, equipment, ethnicity, experiment, expertise, eyewear, glove, head, head and shoulders, hold, holding, indoors, lab, lab coat, laboratory, laboratory equipment, look, looking, looking through an object, man, microscope, mustache, object, occupation, one man only, one person, one senior man only, person, protective, protective eyewear, protective glove, protective workwear, research, researcher, science, scientific, scientific experiment, scientist, senior, senior adult, shadow, shoulders, suit, technician, through, workwear, wristwatch, years, 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, 1574r-08229, 1574r 08229, 1574r08229