The term "Blood Counts" refers to the number of blood
cells you have in your body. There are 3 different kinds of blood
cells: Red Blood Cells, White Blood Cells, and Platelets.
Before you learn more about the kinds of blood cells, it is important
to know where they come from.

Bones are actually hollow on the inside.
The hollow section is filled with a liquid substance called "bone
marrow."
This bone marrow is where blood cells are made.
The outside of a bone
Some of the stem cells grow
up to become RED BLOOD CELLS
Some of the Stem Cells Grow
up to become White Blood Cells
Some of the stem cells grow
up to become Platelets