whats the difference between B and T lymphocytes?

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Please could someone describe how B and T lymphocytes would work together to fight an invading pathogen

Posted Thu 10th May, 2012 @ 22:51 by jade

3 Answers

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Once the correct lymphocyte is found it then differentiates. Macrophages release cytokines called Interleukins that stimmulate the differntiation of B and T cells.

T-Lymphocytes differentiate into 3 things:

  • T-Helper - These release cytokines to make B cells develop. They also stimulate phagocytosis.
  • T-Killer - These attack and kill infected cells by secreting a toxic substance
  • T-Memory - These remember the antigens and allow for a quick response if you become infected a second time with the same disease.

B-Lymphocytes differentiate into two types of cells:

  • Plasma cells - These flow around the blood and manufacture and release the correct antibodies.
  • B-Memory Cells - These remain in the body for many years and provide immunological memory. This allows the body to recognise the pathogen a second time and fight it off quicker.

Hope this helps!

Answered Fri 11th May, 2012 @ 17:06 by Sophie
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hey there,could you send me a link for mark scheme of unit 2 january aqa paper  , please

Answered Fri 11th May, 2012 @ 17:22 by haider
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Answered Sun 13th May, 2012 @ 12:03 by Georgina