Multiple choice

The intraepithelial lymphocytes are situated in the epithelium of the intestine and are regarded as an essential part of the immune system. Which of the following characteristically is NOT expressed by the main populations of intraepithelial lymphocytes?

  1. CD 19

  2. CD 103

  3. The γδ form T-cell receptor [TCR]

  4. αβ form of the T-cell receptor [TCR]

  5. CD8

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A Correct answer
Explanation

Intraepithelial lymphocytes are T cells of various types, not B cells. CD19 is a B cell marker.