{Reference Type}: Letter {Title}: The 9aaTAD Activation Domains in the Yamanaka Transcription Factors Oct4, Sox2, Myc, and Klf4. {Author}: Piskacek M;Otasevic T;Repko M;Knight A; {Journal}: Stem Cell Rev Rep {Volume}: 17 {Issue}: 5 {Year}: 10 2021 {Factor}: 6.692 {DOI}: 10.1007/s12015-021-10225-8 {Abstract}: