Which of the following is not an antigen presenting cell?

Discussion in 'Question Zone' started by Guest, Dec 18, 2008.

  1. Guest

    Guest Guest

    Which of the following is not an antigen presenting cell?

    a- T cell
    b- Activated B cell
    c- Dentritic cells
    d- Langerhans cells
  2. Guest

    Guest Guest

    Ans: B.
    Ref: Robbins 7th edition, page 199

    Discussion
    An antigen-presenting cell (APC) or accessory cell is a cell that displays foreign antigen complexed with MHC on the surface. T-cells may recognize this complex using their T-cell receptor (TCR).
    The various antigen presenting cells are:
    • Macrophages
    • Dentritic cells
    • Immature dentritic cells – Langerhans cells.

    Comments
    B cells are antibody secreting cells. B-cells, which express antibody, can very efficiently present the antigen to which their antibody is directed, but are inefficient Antigen Presenting cells for most other antigens.

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