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Peripheral B and T cell differentiation - University Institute of ...

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CD4 T-Zelle<br />

CD40L<br />

T-Zell-Hilfe<br />

durch Zytokine<br />

2.Signal:<br />

Quervernetzung der<br />

Ig durch Antigen oder<br />

Aktivierung durch CD40L<br />

CD40<br />

1. Signal:<br />

Bindung des Antigen<br />

an Ig<br />

2. Signal<br />

naive B - Zelle<br />

kein<br />

2. Signal<br />

B-Gedächtniszelle

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