The Immune System - AS Biology Revision - OCR (Unit 2.2.2.)
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Uploaded by OCRBiologyAS on Jun 6, 2010
The Immune System. AS Biology. OCR Exam Board. Unit 2.2.2. The "You need to know..." section has come from the OCR specification. By an AS Biology student. Music: Valerie - Mark Ronson & Amy Winehouse (If you don't like the music, just mute it. There's no info through audio :)) thanks! :D
I forgot to say about cell signalling with b lympocytes so:
Cell signalling is how cells communicate with each other.
A cell can release or present a substance that binds to the receptors on another cell which causes a response from the other cell.
It's important cause in the immune response it helps to activate all the diff. types of white blood cells that are needed.
E.g. T lymphocytes release substances that bind to receptors on B lymphocytes which activates the B lymp. - the T lymp. are signalling to the B lymp. that there's a pathogen in the body.
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