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This tutorial covers how the spleen is involved in the immune response.

You can navigate through this tutorial using the buttons at the top of the screen.

The tutorial will ask you questions. Click on your chosen answer to see feedback; click the answer again to make the feedback disappear. When you're finished with one page, click the navigation button for the next page to move ahead. If a word is bolded; click on the word to see additional information; click the word again to make this information disappear.

Have fun! Click on button '1' to see the first page of the tutorial.