CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
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Chapter 43, Problem 7TYU
Summary Introduction

Introduction: “Adaptive immunity” has “humoral response” and “cell-mediated response”. The humoral response is produced by the antibodies against the “pathogens in body fluids”. The cell-mediated response is produced by cytotoxic cells. The antibodies and cytotoxic cells are derived from lymphocytes. The lymphocytes develop from the bone marrow. Some lymphocytes undergo maturation in bone marrow itself, which are called as “B Lymphocytes”. The other remaining lymphocytes mature in thymus and are called as “T Lymphocytes”. Helper T cells and cytotoxic T cells are derived from “T Lymphocytes”. The macrophages are the “antigen-presenting cells” and activate the “T-helper” cells.

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