Question

What is the cause of autoimmune diseases?

A. They can be caused by both a mutated gene and a pathogen.
B. The causes of autoimmune diseases are unknown.
C. They are caused by a pathogen.
D. They are caused by mutated genes.

Answer 1

Bro is the d por qué casusa muted genes

Answer 2

Answer: B

Explanation: body's natural defenses — the immune system — attack the body's own healthy tissue