Chapter 22, Problem 16DYKB

Summary Introduction

To describe:

The way in which helper T-lymphocytes play a pivotal role in a healthy, normal functioning of immune system.

Concept introduction:

The T-lymphocytes are of two types, helper T-lymphocytes and cytotoxic T-lymphocytes which are activated during the effector's response at the site of infection. The T- helper lymphocytes release cytokines like IL-2 and IL-4.