Which of the following components possesses antibacterial properties?

  • A
    Gastric acid
  • B
    Saliva in the mouth
  • C
    Tears from the eyes
  • D
    All of the above

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$B$-lymphocytes produce an army of proteins in response to pathogens entering our body to fight them. These proteins are called.........

Which of the following is true regarding $T$-lymphocytes in mammals?

The yellowish fluid "colostrum" secreted by mammary glands of the mother during the initial days of lactation has abundant antibodies $(IgA)$ to protect the infant. This type of immunity is called:

The toxic substances produced by foreign bodies that trigger an immune response are known as:

What is an antibody?

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