Figure 3

Characterization of the BiPSCs. (a) Immunofluorescence staining of BiPSC13 and MIB2-6 for expression of the pluripotent markers Oct3/4, Nanog, SSEA4, TRA-1-60, and TRA-1-81. (b) Expression of endogenous Oct3/4, Sox2, Klf4, cMyc, Pax5, AID, and GAPDH in BiPSCs (BiPSC13, MIB2-6) and normal B cells (CD19) from the lymph node analyzed using RT-PCR. (c) RT-PCR analysis of the expression of retrovirus-derived Oct3/4, Sox2, Klf4, and cMyc in BiPSCs (BiPSC13, MIB2-6). HUC-Fm, human umbilical cord fibroblast cells, (male; RIKEN, Tsukuba, Japan) infected with a retrovirus containing Oct3/4, Sox2, Klf4, c-Myc, and GAPDH for 5 days were used as the positive control.