Figure 9From: Coordinate regulation of RARgamma2, TBP, and TAFII135 by targeted proteolysis during retinoic acid-induced differentiation of F9 embryonal carcinoma cellsParietal differentiation of lines A and B. Each panel shows representative phase-contrast photography at 125-fold magnification of wild-type cells or lines A and B after 6 days of treatment with T-RA and two days with T-RA and bt2cAMP.Back to article page