The correct answer is Option is (4)- Deficient T-lymphocyte production.
- The thymus is a vital organ for the development of T-lymphocytes (T cells), which are essential for the adaptive immune system. T cells are responsible for recognizing and fighting off infections, pathogens, and abnormal cells (such as cancer cells).
- If the thymus is surgically removed in a newborn, it will lead to deficient T-lymphocyte production, severely impairing the child’s immune system. Without a proper population of T cells, the immune response will be weakened, making the body more susceptible to infections and diseases.
Other options:
- Absence of allergens: The thymus is unrelated to allergens or the presence of allergens in the environment, so this option is incorrect.
- Decreased interferon production: Interferons are produced by various immune cells (including T cells and macrophages), but their production is not directly linked to the thymus, so this is incorrect.
- Impaired B-lymphocyte function: While T cells help regulate B cells, the thymus primarily affects T-lymphocytes, not B-lymphocytes, so this option is incorrect.
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