Chapter 21.2, Problem 1AYLO

Summary Introduction

To discuss:

Three lines of defense against pathogens

Introduction:

For all living organisms, there is a challenge for surviving by defeating the entire pathogenic organism. The human body depends on itself to kill the pathogen or to eliminate the foreign particles by an organized system called the lymphatic system. The lymphatic system consists of a group of cells or immune cells that inhabit in all the organs of the body. The lymphatic system includes lymphatic organs and group of lymphatic tissues involved in the immune system.