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Transport Systems (Blood Vessels (Arteries (Artery, High blood pressure,…

- - - - Bioconcave disk
      - Short diffusion distance
    - - No nucleus
        
        More space for haemoglobin
      - No mitochondria
        
        Don't use up the O2 being transported
      - Haemoglobin
        
        Carries O2
  - - - Kill microorganisms
      - Engulfs microorganisms
      - Then Digested by enzymes and killed
    - - Produces antibodies
      - Kills microorganisms or clumps them together