What do we call a lymphocyte that has never encountered an antigen?Group of answer choicesT cellB cellnaïve lymphocytestem leukocyteforeign lymphocyte
Question
What do we call a lymphocyte that has never encountered an antigen?
Group of answer choices
- T cell
- B cell
- naïve lymphocyte
- stem leukocyte
- foreign lymphocyte
Solution
Answer
The lymphocyte that has never encountered an antigen is called a naïve lymphocyte.
Naïve lymphocytes include both T cells and B cells that have matured in the thymus or bone marrow, respectively, but have not yet been exposed to their specific antigens. This term is used to denote lymphocytes that are in their initial state before they encounter pathogens, and thus they have not yet undergone activation or differentiation.
In summary, among the options provided—T cell, B cell, naïve lymphocyte, stem leukocyte, and foreign lymphocyte—the correct choice is naïve lymphocyte.
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