Little boy Timmy hate balloons (inorganic subsance) but the clown (carcinogen) is giving them to him anyway.
Timmy's friends (phagocytes) prevent the clown from giving Timmy the balloons and Timmy remains healthy.
The clown continues to try to give Timmy balloons but Timmy uses his scissors (enzymes) to cut them away and Timmy remains healthy.
The clown was able to give Timmy a balloon (oncogene present). Luckily though, his friend phagocyte was able to stop him from receiving anymore (rapid cell division) so the balloon doesn't affect Timmy much.
Timmy ended up with several balloons (oncogene activated), so his big friend Macrophage calls the rest of their friends (immune system) to help get rid of the balloons.
Timmy's balloon also start popping themselves (apoptosis) so Timmy doesn't get sick!