Cell Division Errors and Tumor Formation

Your body's cells have a copy-paste function, but one tiny glitch can create a monster.

Normally, your cells divide in a controlled process called mitosis to heal wounds or

help you grow. But sometimes, mistakes are made when your DNA gets copied.

This error can break the "off" switch for cell division, causing cells to replicate uncontrollably.

This creates a mass of extra cells called a tumor. Some are benign and harmless.

But if the tumor is malignant, that's cancer, and it can spread. To know for sure,

doctors perform a biopsy, taking a tiny sample to see exactly what those rogue cells

are doing.