Answer: D. Non-Specific, Physical Barrier
Explanation: This is because non-specific refers to an immune defense to an injury not specific. Specific immune defenses, for example, is like a memory atigen that can remember something like the flu, to fight against it more effieciently if it may return.
Non-Specific, physical barrier is the skin provides which of the following immune defenses
Immune defense is the ability of higher organisms to identify and combat potentially harmful microorganisms such as viruses, bacteria, fungi, protozoa and helminths by highly sophisticated mechanisms involving soluble factors and immune competent cells.
This is because non-specific refers to an immune defense to an injury not specific. Specific immune defenses, for example, is like a memory antigen that can remember something like the flu, to fight against it more effieciently if it may return.
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