The T4 cell count. which is considered one of the markers of disease progression in an HIV infected individual. is modelled in this paper. The World Health Organisation has recently advocated that countries encourage HIV infected individuals to commence antiretroviral treatments once their T4 cell count drops below 350 cells per ml of blood (this threshold was formerly 200 cells per m... https://www.spidertattooz.com/WAC-4011-LED-Horizontal-Step-Light-Colorscaping/