A review.Dr Robert Modlin was interviewed by Emma Quigley (Senior Editor, Expert Opinion) on 5th Feb. 2007.Robert L Modlin, MD, is Professor in the Division of Dermatol. and in the Department of Microbiol., Immunol. and Mol. Genetics at the University of California, Los Angeles.He is also the Chief of the Division of Dermatol.He completed his undergraduate studies at Johns Hopkins University and received his medical degree at the New York University School of Medicine.Dr Modlin's interest in leprosy began during his dermatol. residency at the Los Angeles County/University of Southern California Medical Center.He has studied leprosy as a model to learn about mechanisms of host defense in humans.As such, Dr Modlin's laboratory has made fundamental insights into T cell subsets, cytokine patterns, antigen presentation, innate immunity and antimicrobial mechanisms in the human immune response to infection.He has been awarded three patents for this research.Dr Modlin has published > 150 articles, including 12 papers in Science and Nature, 4 in Nature Medicine, received the Montagna Award for outstanding young investigator from the Society for Investigative Dermatol., a merit award from the National Institutes of Health and the Sulzberger lectureship of the American Academy of Dermatol.Dr Modlin is a member of the American Society of Clin. Investigation and the American Association of Physicians.He is the Deputy Editor for the Journal of Immunol., having served on the editorial board of the Journal of Clin. Investigation, Infection and Immunity and Immunol.Dr Modlin has served on the Society for Investigative Dermatol. Board of Directors.