The focus of my research over the last 20 years has been in the field of mucosal immunology. During my early career, I undertook studies directed at defining aspects of the host-parasite relationship at mucosal surfaces, and the mechanisms by which antibody is delivered to mucosal sites. These studies provided evidence to support the hypothesis (as it was), of a common mucosal immune system. Since that time I have become recognised both nationally and internationally as a leader in this field.