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.
The effects of the HIV virus on the immune system can lead to the diseases that we call AIDS. Copyright: Production team. HIV mainly, but not exclusively, infects a type of cell of the immune system, known as CD4+ T helper cells (so called because they âhelpâ activate other immune cells).