Stem cells have the potential to - become a specialized type of cell to replace worn out cells destroy damaged or worn out cells become cancer cells when viruses enter the body

## Step 1
Stem cells are unique in that they have the ability to differentiate into any type of cell in the body. This means they can become any cell that the body needs, such as a skin cell, a muscle cell, or a blood cell.

## Step 2
The primary function of stem cells is to replace worn-out cells. This is because as cells age and wear out, they need to be replaced to maintain the body's health and functionality.

## Step 3
Stem cells do not destroy damaged or worn-out cells. Instead, they replace them. This is a common misconception about stem cells.

## Step 4
Stem cells do not become cancer cells when viruses enter the body. This is also a misconception. While it is true that some viruses can cause cancer, this is not a function of stem cells.