• 5 macrophage populations: resting, Mtb infected, exposed to HIV and infected by HIV• 3 CD4+ T cell populations: uninfected/susceptible, infected/exposed, and productively infected• 2 CTL populations: Mtb-specific and HIV-specific• Slight modifications to some equations from Magombedze et al., 2008 o Inclusion of HIV transcription mechanisms in HIV infection equations and coinfection equations o Simulation of HIV and TB drugs (3 of each)• No Mtb-HIV coinfected cells. This evidence concerns the gene CD4 and HIV infectious disease.