Answer and explanation

Correct answer: A. An antibody made by identical cells cloned from one B lymphocyte

  1. Step 1: Monoclonal means from one clone. Step 2. All the antibodies bind the same antigen. Answer: antibodies from identical cloned cells. Why not the others: these are polyclonal antibodies, antigens and phagocytes.

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What is a monoclonal antibody? | Scottish Highers