Prompt
                                        
                                            Create a realistic portrait of Joshua Lederberg, a middle-aged American biologist with a gentle expression, wearing a suit and tie, in a laboratory setting with subtle hints of his work in bacterial genetics, such as petri dishes or microscopes in the background, reflecting his contributions to the field and his Nobel Prize in Physiology or Medicine, not Physics; depict him in a contemplative pose, acknowledging his achievements in genetics and microbiology.