Keywords
60-65 years, adult, analyzing, chemical, chemistry, close-up, colour, container, contemplation, day, discovery, experiment, focus on foreground, goggles, hand, head shot, healthcare and medicine, holding, indoors, knowledge, man, occupation, one person only, photography, precision, protection, research, rubber gloves, safety, science, scientist, senior adult, senior man, technology, test, test tube, working, yellow, 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, u12203534