ANSWER ASAP Which autoimmune diseases is caused by attacks on the small intestine? A. pernicious anemia
B. rheumatoid arthritis
C. type 1 diabetes
D. celiac disease

D Celiac disease

Explanation: people with celiac disease eat gluten (a protein found in wheat, rye and barley), their body mounts an immune response that attacks the small intestine. These attacks lead to damage on the villi, small fingerlike projections that line the small intestine, that promote nutrient absorption. When the villi get damaged, nutrients cannot be absorbed properly into the body.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

yes it is weird but true