Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 6 - Assess - Page 130: 7

Answer

A. Lymphocytes

Work Step by Step

Lymphocytes are the second most abundant type of white blood cell, making up 25-35% of all white blood cells. There are two types of lymphocytes: B cells and T cells. Mature B cells (also known as plasma cells) produce antibodies which mark pathogens for destruction. Cytotoxic T cells directly destroy pathogens.
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