NEET 2008 Biology question

To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?

(1)Physical barriers
(2)Cytokine barriers
(3)Cellular barriers
(4)Physiological barriersCorrect

Answer: (4)

Solution

Innate immunity has four types of barriers: physical (skin, mucus), physiological (acid in the stomach, saliva in the mouth, tears from the eyes), cellular (WBCs such as neutrophils and macrophages) and cytokine barriers

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Question ID VK-090120