WBC (White Blood Cell) - (version 1)
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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.

Revised by Ryhan Lin on April 16 2020(作者：林瑞亨)


The first version of the White Blood Cell scenario. The white
blood cell and bacteria are present to get you started.