Fig. 4.

Expression of cyclin dependent kinases upon stimulation by C-pc: Lysates from uPA⁺ and uPA⁻ cells treated with 75μg/ml C-pc were analyzed by western blot to study the expression of cdK 1 and cdK 2 proteins. Equal loading of proteins was verified using β-actin antibody. Upper panel is a representative image of three independent experiments. The relative density of the proteins was expressed as the ratio of cdK 1/β-actin and cdK 2/β-actin, as shown in lower panel. Values are expressed as mean ± S.D. of three independent experiments. * p < 0.05.