Human immune system. Introduction.




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Introduction

Picture 1. This cell is a macrophage. It is a type of white blood cell that can move. It engulfs (phagocytoses) invading pathogens.

The human body is a rich source of fats, proteins, carbohydrates and other nutrients for the growth of micro-organisms. It is therefore no surprise that many have evolved to grow and reproduce on the surface or inside the body. These 'pathogens' cause damage and disease as they grow and reproduce so the body has developed an immune system to combat these infections.

Contents
	There are 11 pages in this electronic resource (e-source): Introduction Pathogens and disease Barriers to infection Acquired immunity Immunisation Medicines and the immune system Vaccinations in the UK Antibiotics Immune system causes problems HIV/AIDS Quiz

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