1) The document discusses using intestinal organoids as an in vitro model to study enteric diseases in pigs. Organoids mimic intestinal tissue and present all organ-specific cell types. 2) The author's project uses mouse enteroids to study the pathogen Lawsonia intracellularis, which causes proliferative enteropathy in pigs. Preliminary results show the enteroids are permissive to L. intracellularis infection. 3) The goal is to further study the mechanisms of proliferation caused by L. intracellularis using the enteroid model to develop new treatment and control strategies for the disease. The author is also working to characterize and develop pig intestinal organoids for host-pathogen interaction studies.