CK-12 Foundation
Ck 12: Life Science: Autoimmune Diseases
[Free Registration/Login may be required to access all resource tools.] The immune system usually protects you from pathogens and other causes of disease. When the immune system is working properly, it keeps you from getting sick. But...
CK-12 Foundation
Ck 12: Life Science: 11.58 Autoimmune Disease
Learn about some autoimmune disorders that affect human health.