European Academy Bozen-Bolzano (EURAC) 1 article published in JoVE Developmental Biology Generation of Induced Pluripotent Stem Cells from Frozen Buffy Coats using Non-integrating Episomal Plasmids Viviana Meraviglia*1, Alessandra Zanon*1, Alexandros A. Lavdas1, Christine Schwienbacher1, Rosamaria Silipigni2, Marina Di Segni2, Huei-Sheng Vincent Chen3, Peter P. Pramstaller1, Andrew A. Hicks1, Alessandra Rossini1 1Center for Biomedicine, European Academy Bozen/Bolzano (EURAC), 2 Induced pluripotent stem cells (iPSCs) represent a source of patient-specific tissues for clinical applications and basic research. Here, we present a detailed protocol to reprogram human peripheral blood mononuclear cells (PBMNCs) obtained from frozen buffy coats into viral-free iPSCs using non-integrating episomal plasmids.