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 1200 tcells per every milimeter of blood. How HIV works is that once it's in the blood stream, the HIV virus is a hundred times smaller than one tcell, and the HIV virus attaches itself to the CD4 cell and it sinks into the tcell and uses the cells RNA to copy the HIV virus up to a billion times in 24 hours. But once the HIV uses the tcells RNA the tcell then become paralyzed and dies, and after HIV and destroyed so many tcells that the numbers drop below 200 tcells per milimeter of blood, the body can not naturely fight off infection, and this stage is what you call full blown AIDS.
immune system
The immune system must attack the bodys own cells
Because when diabetes inters the body, it makes the beta cells that produce the insulin look like the intruders. So the body's immune system attacks and kills all of the beta cells.
Pathogens
its killer T cells
axons neurons , cells help protect the bodys defense system against infection ..auto-immune defiency ...also oxygen
yes it can because it is a bacteria, the bodys immune system automatically starts producing more white cells to fight off the bacteria
Cardiovascular
"Immunological system" is just a fancy way to say "immune system".
Circulatory system
yes
I believe the bodies transportion system is the cardiovascular system :)