How to take blood and Count White Blood Cells

First part of the video demos how to take blood and looks at the collection tubes that allow clotting and prevent clotting. The rest of the video follows the blood sample that has not clotted, into the lab and what happens to it. The next part looks at the clotted blood.

[sukanyabonjure]

If we both with hot water this reaction may will happen in our body
Maybe am crazy but still curious!!

[sofiasanchez]

Let me see if I got it: the only ingredients needed to do this are salty water?

[lunalovegoodthebudgie]

i came here for my kid but i am more interested than her lol