(a) Ba/F3 cells expressing myrPI(3) K-ER, myrPKB-ER, FOXO3(A3)-ER or FOXO4(A3)-ER were stimulated with 4-OHT for 4 h (myrPI(3) K-ER, myrPKB-ER) or 8 h (FOXO3(A3)-ER and FOXO4(A3)-ER) and microarray analyses were performed. Shown are the fold changes relative to control cells for glutamine synthetase (GS), Mxi1 and Pink1. Data are represented as mean values of one experiment performed in quadruplicate. 