Keywords
60-64 years, above 30, analyzing, biologist, biology, black background, caucasian appearance, chemical, chemist, chemistry, close-up, color, concentration, contemplation, dark, discovery, education, examining, expertise, front view, head and shoulders, holding, lab coat, laboratory, laboratory equipment, liquid, occupation, one person, part of, photography, quality control, red, research, science, scientific experiment, scientist, scrutiny, selective focus, senior men, series, shadow, single object, studio shot, studying, test tube, vertical, 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, 943035