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Questions and Answers
Which of the following cells is lymphoid in origin?
Which of the following cells is lymphoid in origin?
- Eosinophils
- B cells (correct)
- Mast cells
- Neutrophils
Which organ is considered a primary lymphoid organ?
Which organ is considered a primary lymphoid organ?
- Bone marrow (correct)
- Tonsil
- Lymph node
- Spleen
Which of the following is a C3 convertase?
Which of the following is a C3 convertase?
- C4b2a3b
- C5
- C4b2a (correct)
- C1
Which action is not performed by antibodies?
Which action is not performed by antibodies?
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IgM is distinguished as the first antibody secreted by activated B cells. Which other antibody is least likely to be the first secreted?
IgM is distinguished as the first antibody secreted by activated B cells. Which other antibody is least likely to be the first secreted?
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Which of the following is not true about central lymphoid organs?
Which of the following is not true about central lymphoid organs?
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Study Notes
Lymphoid System
- Eosinophils are not lymphoid in origin.
Primary Lymphoid Organs
- Bone marrow is a central/primary lymphoid organ.
- Lymph nodes, spleen, tonsils, and appendices are not primary lymphoid organs.
Complement System
- C3 convertase is C4b2a.
- C4b2a3b is not C3 convertase.
- C5 is not C3 convertase.
- CI is not C3 convertase.
- C3b2Bb is not C3 convertase.
Antibody Effector Functions
- Opsonization is an antibody effector function.
- Neutralization is an antibody effector function.
- Complement activation is an antibody effector function.
- ADCC (Antibody-Dependent Cellular Cytotoxicity) is an antibody effector function.
- Linked recognition is not an antibody effector function.
Antibody Secretion
- IgM is the first antibody secreted by activated B cells.
- IgA, IgD, IgE, and IgG are not the first antibody secreted by activated B cells.
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