Summary
Three sources of fetal bovine serum (FBS) were fractionated by ammonium sulfate precipitation and by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), transferred to Immobilon-P membranes, immunoblotted with a panel of transcription factor antibodies, and detected by enhanced chemiluminescence. Nine transcription factors were detected—ATF-2, SRE-ZBP, GATA-2, TFIID, Ets-1/Ets-2, E2F-1, Oct-2, p53, and AP-2; four transcription factors were not detected—Myo D, CREB, Sp2, and Wilms’ tumor. The results indicated the presence of varying amounts of several transcription factors in three commercial sources and may represent heretofore unrecognized factors influencing cell culture.
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Knepper, P.A., Mayanil, C.S., Goossens, W. et al. The presence of transcription factors in fetal bovine sera. In Vitro Cell.Dev.Biol.-Animal 34, 170–173 (1998). https://doi.org/10.1007/s11626-998-0101-2
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DOI: https://doi.org/10.1007/s11626-998-0101-2