1. Recapitulating the liver niche in vitro Kiryu K. Yap and Geraldine M. Mitchell2. Organoid systems for recapitulating the intestinal stem cell niche and modeling disease in vitro Hui Yi Grace Lim, Lana Kostic, and Nick Barker3. Reconstructing the lung stem cell niche in vitroDayanand Swami, Jyotirmoi Aich, Bharti Bisht, and Manash K. Paul4. Engineering mammary tissue microenvironments in vitro Julien Clegg, Maria Koch, Akhilandeshwari Ravichandran, Dietmar W. Hutmacher, and Laura J. Bray5. Recapitulating human skeletal muscle in vitroAnna Urciuolo, Maria Easler, and Nicola Elvassore