sentence2_structure: The immune system<>typically recognizes<>$$$The immune system<>destroys<>foreign cells or substances that may cause disease$$$foreign cells or substances<>may cause<>disease
sentence1: The body's immune system has many mechanisms to defend against unwanted foreign substances (viruses, bacteria, cancer cells, etc.), including antibodies that recognize and destroy the substances.
sentence2: The immune system typically recognizes, attacks, and destroys foreign cells or substances that may cause disease.
question: Which body system typically recognizes, attacks, and destroys foreign cells or substances that may cause disease?