CAMPBELL BIOLOGY (18W)
CAMPBELL BIOLOGY (18W)
12th Edition
ISBN: 9780136858256
Author: Urry
Publisher: PEARSON
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Chapter 43.3, Problem 1CC
Summary Introduction

To discuss: The functional deficiency of immune system if the thymus is absent.

Concept introduction:

Lymphocytes develop from stem cells present in the bone marrow. There are two types of lymphocytes. They are “B” and “T” lymphocytes. Maturation of “B lymphocytes” takes place in the “bone marrow” itself. Maturation of “T lymphocytes” takes place in the thymus gland.

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Students have asked these similar questions
If the thymus gland failed to produce thymic hormones, which population of lymphocytes would be affected?
Lymphocytes that develop immunocompetence in the thymus are (a) B lymphocytes, (b) T lymphocytes.
If an individual failed to develop a thymus because of a genetic defect, what would happen to the immune responses mediated by antibodies and those mediated by cytotoxic T cells? Hint: Think how helper T cells and B cells are functionally related,
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