B-Cell Receptors Bind to Antigens That Are Either Freely Dissolved

question 17

Multiple Choice

B-cell receptors bind to antigens that are either freely dissolved or present on the surface of invading or foreign cells. T-cell receptors ________.

• A) are active only in lymph nodes
• B) bind only to antigens present on the surface of the invading or foreign cells
• C) bind only to freely dissolved antigens in the plasma
• D) bind to antigen fragments presented on major histocompatibility (MHC) complexes by host cells
• E) bind to antigens that are either freely dissolved or present on the surface of invading or foreign cells

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