He is investigating the role of decellularized extracellular matrix in limb and muscle regeneration. He has extensive experience studying vascular biology and cardiovascular tissue engineering. Neill's particular interest is in the role dynamic forces play in the control of cell differentiation and cellular recruitment to sites of injury. Neill completed his doctorate at the UK Centre for Tissue Engineering at the University of Manchester. Here, he investigated how cyclic stretching mediates differentiation of adult progenitor cells down smooth muscle, osteogenic and adipogenic lineages. In addition, Neill investigated the endothelialization of artificial vascular grafts and the effects of extracellular matrix substrata and shear stress on endothelial cell attachment and retention, leading to the development of a type VIII collagen-coated, endothelialized polyurethane graft.