Lentiviral gene transfer of the proneural factor Ascl1 partially reprogrammed P11/12 Müller glial cells in vitro into retinal progenitors 3 weeks after infection (Pollak et al., 2013), a process facilitated by microRNA miR-124-9-9* (Wohl and Reh, 2016). This evidence concerns the gene ASCL1 and infection.