msyamp
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Which of the following are true in respect to the thymus?
1. The thymus is differentiated sufficiently to participate in immune response by the 12th week
of gestation.
2. In the fetus, the thymus is the major source of lymphocytes.
3. Removal of the thymus may result in decrease in lymphocytes.
4. Precursor pro-thymocyte migrate from the bone marrow where it differentiates into T cells.
5. Each T cell is programmed in the thymus as to which antigens it will react.
A. 1,2,and 3
B. 1, 3, and 4
C. 2, 4, and 5
D. 2, 3, 4, and 5
E. All of the items listed are true
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| sturge_weber
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may be d
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| msyamp
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Posts: 1,462
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any more????
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| cyra
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E....the thymus is functional by the 12th week of gestation.
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| msyamp
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you are right cyra
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