Chapter 52, Problem 8TY

Summary Introduction

Introduction: The body contains a well-defined system to protect itself from infections and harmful agents. This system is known as the immunity system. The two types of immunity systems are innate and adaptive immunity. The immunity that an organism contains from the time of birth is called innate immunity. However, the immunity that the organism acquires during its lifetime is called adaptive immunity. The cells that are responsible for adaptive immunity are known as lymphocytes. The body contains two types of lymphocytes: T-cells and B-cells.