Mustang Marine. As a prior enlisted Marine, our favorite officers were the mustangs. All that term means is prior enlisted. The reason a lot of people prefer them to fresh new butterbars out of college is that the mustangs have experience as an enlisted and, now, usually in war time scenarios.
What causes disease? Injury, infection or an unhealthy lifestyle can all make you ill. So can your genes, the instructions that tell your body how to make all the different proteins it needs to survive and grow. A change in a gene may cause a change in a protein, affecting the way it works in your body. Some genes are involved in common illnesses, while others cause rare genetic conditions.
What Causes Autoimmune Disease? No one is really sure what exactly is responsible for causing autoimmune disease. However, doctors have several theories of what may be causing them, such as a virus or bacteria that confuses the immune system and makes it think that healthy tissue is actually an antigen, which in turn causes the immune system to attack perfectly healthy tissue.