front 1 Ability of the body to resist many agents (both living and nonliving) that can cause disease; resistance to disease | back 1 Immunity |
front 2 The innate defense system has two lines of defenses | back 2
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front 3 Provides the body with the third line of defense | back 3 Adaptive Defense System |
front 4 A functional system rather than an organ system | back 4 Immunity System |