By AART
INTRO
There are 100,000,000,0 00,000 cells in the human body. There are signals that are from other cells. That tell the cell to split or not to split. The signals can miss the cell or the signal breaks down.
UV rays
There are three uv rays. Ray a, Ray b and Ray c. Ray a and b go to earth while Ray c bumps off
What cancer is?
Cancer is a disease that kills thousands of people per year
What kinds of cancer are there?
There are 75 kinds of cancer but the one cancer I know the best is skin cancer
Cells mutate by signals
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