Prompt
Create a realistic portrait of Jonas Salk, a middle-aged man with a gentle expression, wearing a suit and tie, sitting in a laboratory setting with a subtle background of medical equipment and a hint of a polio vaccine vial, symbolizing his groundbreaking work in medicine, specifically his development of the first successful polio vaccine; style: formal, realistic, and slightly nostalgic, reflecting his contributions to the field of medicine and his legacy as a renowned American biologist, researcher, and physician.