Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Blood Disorders ?
    ### Response:
    Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.    Blood disorders affect one or more parts of the blood and prevent your blood from doing its job.
    