Prompt
                                        
                                            Generate an image of John Hunter, a 18th-century British physician and surgeon, in a realistic and formal portrait style, dressed in attire typical of his time, with a backdrop that subtly suggests his connection to medicine and surgery, such as a faint image of human anatomy or a surgical instrument in the background, and include a sense of dignity and authority, reflecting his pioneering contributions to the field of surgery and his legacy.