Not to be confused with group presentation. Representation theory is a branch of mathematics that studies abstract algebraic structures by representing their elements as linear transformations of vector spaces, and studies modules over these abstract algebraic structures.
The signature effect of HIV infection, and the cause of AIDS, is disruption of the T-lymphocyte branch of the immune system and in particular the destruction of CD4+ T-helper cells.
Hiv attacks the body's immune system by destroying what kind of cells?   Once HIV enters the body's blood stream it immediatly starts attacking the body's CD4 cells or your helper t-cells. An average HIV Negative person has roughly around 120â¦0 tcells per every milimeter of blood.