Fig. 6: Drug effect on sensitive cell death rate d0.
From: Optimal dosing of anti-cancer treatment under drug-induced plasticity

The Michaelis-Menten function (4) describing the drug effect on cell proliferation is concave in the drug dose c (left panel). When the dose c is viewed on a log scale, the function becomes takes on an S-shape which is characteristic of viability curves in the biological literature (right panel).