Controlled Release

The drug$/$growth factor absorption mechanism in the scaffold may be modeled in its simplest form, as a three$-$step processes.

Assume $A_s=1$

$k_0=0\mathrm{.}012,$

$k_1=0\mathrm{.}025,$

$(1)$ Write down all the three ODE equations and three initial conditions

$(2)$ Using matiab, plot the concentration changes of $A,B$ and $E$ over time.