AS HSC. Unit 3 Immunisation against disease. By the end of this session, I will be able to. Identify and define what is meant by the term immunisations, Identify and define the two types of immunity,. What is immunity ?.
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Immunisation against disease
In your group discuss the key term immunity and come up with your own definition.
The white blood cell displays the unique shape of the antigen to other cells (T helper cells) which bind to the antigen and then release chemicals which stimulate cells called B lymphocytes to reproduce rapidly.
A few B lymphocytes become memory B lymphocytes which remember the antigens shape for the future but most become antibody producing cells which are called plasma cells
Memory B cell
The antibodies which are produced block the pathogens ability to attack healthy body cells
The stricken pathogen may be killed in the process if its cell wall breaks down or attacked by other, usually T cells, but in the end, the whole group of cells which it is locked into, is consumed by Macrophages – very large white blood cells
Also any deactivated virus or bacteria are engulfed by Macrophages
Write 5 top tips or golden rules about the topic for students taking the lesson next year.
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