Armored Personal Carrier. I think the APC is located where you find the Warden Crossbow.
Autoimmune diseases arise from an overactive immune response of the body against substances and tissues normally present in the body. In other words, the body actually attacks its own cells. An immune disorder is when the body cannot defend itself. [ Source: http://www.chacha ....n immune disorder is when the body cannot defend itself. [ Source: http://www.chacha.com/question/what-is-the-difference-between-immune-disorders-and-autoimmune-diseases ]. More Answers to  What is the difference between immune disorders and autoimmune diseases .
The most common cause of all diseases in the world today is autoimmune diseases. In autoimmune disease our own protective forces (immune system) starts to attack your own body. The name of the disease depends upon the location of the organ under attack.Alzheimer's, Cancer, Heart disease and strokes are all caused by the immune system.The attack in most cases is due to a infection most likely mycoplasma, herpes virus or CMV. Autoimmune diseases are ranked number one cause of heart disease, cancer and all diseases.lzheimer's, Cancer, Heart disease and strokes are all caused by the immune system. The attack in most cases is due to a infection most likely mycoplasma, herpes virus or CMV. Autoimmune diseases are ranked number one cause of heart disease, cancer and all diseases.