Figure EV2. Substitution of c‐Myc by nine TRs.

1. MEFs expressing OSK were transduced with lentiviruses overexpressing each of the nine TRs or c‐Myc as a control. The transduced cultures were examined on day 6 for the formation of early‐iPSC colonies. The boundaries of the early‐iPSC formations are indicated by a blue dashed line.
2. Western blot depicting the expression of O/S/K/M during MEF reprogramming. Gapdh was used as loading control. O: Oct4, S: Sox2, K: Klf4, and M: c‐Myc.

Source data are available online for this figure.