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 .
Causes of Types of Autoimmune diseases: Review the cause informationfor the various types of Autoimmune diseases: 1  Possibly Autoimmune Diseases. 2  Type 1 diabetes. 3  Rheumatoid arthritis. 4  Autoimmune thyroid diseases. 5  Graves Disease. 6  Hashimoto's Thyroiditis.