Cells-Cell Recognition And The Immune System

Question 1

Recognising your own cells

Answer 1

To defend the body from foreign material, lymphocytes must be able to distinguish the body’s own cells and molecules

Question 2

Defence mechanisms

Answer 2

Body has a range of defences to defend itself from pathogens. Some are general and immediate defences like the skin as a physical barrier. These responses involve a type of white blood cell called a lymphocyte and takes two forms:
T lymphocytes
B lymphocytes