Keywords
60's, 60-64 years, 60-65, 60-70, 60s, 65-70, 70's, 70-75, 70-80, 70s, 75-80, adult, african-american ethnicity, asian, asian ethnicity, beaker, chemical, chemist, chemistry, close up, close-up, closeup, color, color image, colour, day, daylight, daytime, defending, elderly, examining, experiment, eyeing, far eastern, fellow, front view, gentleman, gray, gray hair, grey, grey hair, guy, hair, head & shoulders, head and shoulders, hispanic, holding, horizontal, human, human being, indoor, indoors, inside, lab, lab coat, laboratory, latin, latin american, latin american and hispanic ethnicity, liquid, looking, low angle, low angle view, male, man, mixed race person, native american, native american ethnicity, old, one, one person, oriental, pacific islander, pacific islander ethnicity, people, person, photography, protection, protective eyewear, protective glasses, r&d, research, research & development, research and development, retired, retirement, rubber-gloves, safeguard, safety, science, scientific, scientist, security, seeing, senior, senior adult, senior citizen, senior men, serious, seriousness, seventies, seventy, sixties, sixty, solemn, somber, toiling, two objects, viewing, wet, white coat, work, working, 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, bld108968