What is blood made up of. describe what each part does for our body.

Explanation:

Blood is the fluid that sustains life. The components of blood include red blood cells, white blood cells, platelets, and plasma. Some blood cells carry oxygen (necessary for metabolic reactions), some blood cells fight off invading substances that could destroy your cells, and other blood cells help to form clots, which keep your body from losing too much blood.

The fluid portion of the blood carries nutrients needed to fuel each cell in the body. It also shuttles wastes that need to be transported to the excretory system to be passed out of the body and carbon dioxide that needs to be transported to the lungs to be exhaled.

obviously, the latter.

answer; indirect elisa;