To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S4. Confocal microscopy video of cross-section through vascularized tissue after 45 d of perfusion. Three-dimensional bioprinting of thick vascularized tissues David B. Kolesky, Kimberly A. Homan, Mark A. Skylar-Scott, and Jennifer A. Lewis PNAS. 2016. DOI: 10.1073/pnas.1521342113 Download Original Video Browse All Videos »