Autoimmune disorders are
A) chronic conditions that develop from the immune system attacking healthy self-tissues that should normally be left alone.
B) genetic conditions present from birth that continually degrade over time.
C) caused by the immune system not being stimulated enough in adolescence and as a result is over reactive and can cross-react with host tissues.
D) acute infections that target the immune system.
E) short-term mistakes made by the immune system that are quickly recognized and self-limited.
Answer: A
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