Figure 5From: Isobologram analysis of triple therapiesa - d: This shows the volume of additivity for four different cases; displayed are only inner- and outermost surface of additivity, the point of therapy is again included. 5 a shows the case for three linear dose-response-relationships. As expected one gets a single plane (corresponding to the straight line in the 2D case). 5 b is calculated by using one linear and two linear-quadratic equations, 5c uses two linear and one linear-quadratic equation and 5d is calculated by three linear-quadratic equations.Back to article page