Answer :

Hello There!

It contains dissolved substances, cells and cell fragments.
The other parts of blood are:
Red blood cells - Carry blood around the body
White blood bells - Fight against bacteria and diseases
Platelets - Small fragments of bells. They are involved in forming blood clots.

Hope This Helps You!
Good Luck :) 

- Hannah 
This is all I found, I hope it helps a little.

Blood is a fluid connective tissue that contains a liquid component called plasma. Blood also contains dissolved substances and blood cells. Red blood cells carry oxygen, white blood cells defend the body, and platelets help blood clot

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