Modulation of the dynamic equilibrium between G- and Total actin in testosterone-HSA stimulated Caco2 cells. 24 h serum starved cells were stimulated with 10 -7 M androgen conjugate for the indicated time points. (A) Total and G- actin were measured by quantitative immunoblot analysis after Triton X-100 subcellular fractionation. Bars present the G/Total actin mean value ± SE of four independent duplicate experiments (** P < 0.01). (B) Cells were stained with rhodamine-phalloidin for filamentous actin and DRAQ5™ for nuclei. Confocal laser scanning microscopy analyzed samples. Magnification, ×100.