Here's a breakdown:
* Defective cells: These cells have mutations in their DNA that disrupt normal cell growth and division.
* Uncontrolled division: Instead of following normal cell cycle regulation, these cells divide rapidly and without the normal checkpoints.
* Tumor formation: The accumulation of these cells can form a mass called a tumor, which can be benign (non-cancerous) or malignant (cancerous).
There are many different types of cancer, each with its own characteristics and causes. The name of a specific type of cancer often reflects the type of cell or tissue where it originates (e.g., breast cancer, lung cancer, leukemia).
