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Question

Identify the first line of defence in our body?

A
Tear
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B
WBCs
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C
Mucus membrane
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D
Skin
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Solution

The correct option is D Skin
Skin, mucous membrane and body secretions like tears, mucus, ear wax etc form the first line of defence of the body against microbial invasion. These are called so because they are the first barriers which the pathogens encounter when they enter a body during an infection.

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