Fig. 1From: Carcinogenesis: alterations in reciprocal interactions of normal functional structure of biologic systemsPhase trajectories corresponding to the system \( \frac{du}{dt}={S}_1u.\ {S}_1=\left(\begin{array}{cc}\hfill 1\hfill & \hfill \hfill \\ {}\hfill \hfill & \hfill -1\hfill \end{array}\right),u=\left({u}_1,{u}_2\right) \) Back to article page