The blood has 3 types of cells:
🔴Red blood cells, which carry oxygen.
⚪White blood cells, which are our body’s army.
🟡Platelets, which help stop bleeding.

All these cells are made in a special machine inside our bones, called the bone marrow.

Sometimes, the DNA (your body’s instruction book) sends the wrong recipe.
Then, the body starts making weird cells called leukemia cells. These cells grow very fast and can take over the bone marrow, pushing out healthy cells.
This disease is called leukemia, and it is a type of blood cancer.

There are different types of leukemia, and doctors treat each type in a special way.

One of the treatments is changing the special machine, which is called a bone marrow transplant.