        WBC (White Blood Cell) - (version 3)
        ====================================
        
This scenario is part of the book 

    "Introduction to Programming with Greenfoot"
    (Second edition)
    by Michael Kölling
    ISBN: 0134054296

This scenario is discussed in detail in that book (chapter 5).

Copyright (c) Michael Kölling.


The third version of the White Blood Cell scenario. We can catch 
and neutralize bacteria, and have to evade the viruses.
