Pluripotent stem cells allow capturing the genetic background in which a disease such as Parkinson's disease (PD) occurs. Induced pluripotent stem cells from a PD patient were turned into neuron progenitor cells that over more than 100 days in culture produce millions of densely connected nerve cells with cell bodies (in blue) and long processes called dendrites and axons (in green and red).Image Credit: Philipp Berg
