Keywords
40-44 years, 40s, absorption, adult, alone, american, analyse, analyze, assembly, assurance, attention, attentive, bio technology, bioreactor, bioreactor headplate, caucasian, caucasian appearance, caucasian ethnicity, certitude, checking, close up, close-up, closeup, color image, colour image, concentrate, concentrated, concentrates, concentrating, concentration, confidence, confident, content, doc, doctor, doctor of medicine, engrossment, equipment, ethnicity, european, exam, examine, examining, experiment, expert, expertise, front view, general practitioner, gp, gray hair, grey hair, head and shoulders, headplate, health, health care, health care provider, health professional, healthcare, healthcare and medicine, healthcare professional, healthcare worker, hold, holding, horizontal, hospital, immersion, indoors, inspecting, lab, lab coat, lab equipment, lab technician, laboratory, laboratory equipment, looking away, male, male doctor, man, man only, mature, mature adult, mature man, md, medical, medical center, medical equipment, medical man, medical occupation, medical practitioner, medical science, medicine, methanol sensor, methanol sensor probe, mixer, mixer assembly, observe, occupation, one man only, one mature man only, one person, people, photography, physician, probe, probing, profession, professional, professional occupation, research, researcher, researching, responsibility, science, science and technology, scientific experiment, scientist, see, self confidence, self confident, self-assured, self-confidence, sensor, series, skill, skilled, study, sureness, uniform, white, 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, gwl10001215